Line data Source code
1 : /*
2 : * SPDX-License-Identifier: MPL-2.0
3 : *
4 : * This Source Code Form is subject to the terms of the Mozilla Public
5 : * License, v. 2.0. If a copy of the MPL was not distributed with this
6 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
7 : *
8 : * Copyright 2024 MonetDB Foundation;
9 : * Copyright August 2008 - 2023 MonetDB B.V.;
10 : * Copyright 1997 - July 2008 CWI.
11 : */
12 :
13 : #include "monetdb_config.h"
14 : #include "rel_select.h"
15 : #include "sql_tokens.h"
16 : #include "sql_privileges.h"
17 : #include "sql_env.h"
18 : #include "sql_decimal.h"
19 : #include "sql_qc.h"
20 : #include "rel_rel.h"
21 : #include "rel_basetable.h"
22 : #include "rel_exp.h"
23 : #include "rel_xml.h"
24 : #include "rel_dump.h"
25 : #include "rel_prop.h"
26 : #include "rel_psm.h"
27 : #include "rel_schema.h"
28 : #include "rel_unnest.h"
29 : #include "rel_sequence.h"
30 : #include "rel_file_loader.h"
31 :
32 : #define VALUE_FUNC(f) (f->func->type == F_FUNC || f->func->type == F_FILT)
33 : #define check_card(card,f) ((card == card_none && !f->res) || (CARD_VALUE(card) && f->res && VALUE_FUNC(f)) || card == card_loader || (card == card_relation && f->func->type == F_UNION))
34 :
35 : /* return all expressions, with table name == tname */
36 : static list *
37 57141 : rel_table_projections( mvc *sql, sql_rel *rel, char *tname, int level )
38 : {
39 57654 : list *exps;
40 :
41 57654 : if (mvc_highwater(sql))
42 0 : return sql_error(sql, 10, SQLSTATE(42000) "Query too complex: running out of stack space");
43 :
44 57654 : if (!rel)
45 : return NULL;
46 :
47 57654 : if (!tname)
48 41914 : return _rel_projections(sql, rel, NULL, 1, 0, 1);
49 :
50 15740 : switch(rel->op) {
51 521 : case op_join:
52 : case op_left:
53 : case op_right:
54 : case op_full:
55 521 : exps = rel_table_projections( sql, rel->l, tname, level+1);
56 521 : if (exps)
57 : return exps;
58 13 : return rel_table_projections( sql, rel->r, tname, level+1);
59 500 : case op_semi:
60 : case op_anti:
61 : case op_select:
62 500 : return rel_table_projections( sql, rel->l, tname, level+1);
63 :
64 54 : case op_topn:
65 : case op_sample:
66 : case op_groupby:
67 : case op_union:
68 : case op_except:
69 : case op_inter:
70 : case op_project:
71 54 : if (!is_processed(rel) && level == 0)
72 0 : return rel_table_projections( sql, rel->l, tname, level+1);
73 : /* fall through */
74 : case op_munion:
75 60 : if (!is_processed(rel) && level == 0) {
76 0 : node *n = ((list*)rel->l)->h;
77 0 : if (n)
78 0 : return rel_table_projections(sql, n->data, tname, level+1);
79 : }
80 : /* fall through */
81 : case op_table:
82 : case op_basetable:
83 14719 : if (is_basetable(rel->op) && !rel->exps)
84 14159 : return rel_base_project_all(sql, rel, tname);
85 560 : if (rel->exps) {
86 560 : int rename = 0;
87 560 : node *en;
88 :
89 : /* first check alias */
90 560 : if (!is_base(rel->op) && !level) {
91 54 : list *exps = sa_list(sql->sa);
92 :
93 409 : for (en = rel->exps->h; en && !rename; en = en->next) {
94 355 : sql_exp *e = en->data;;
95 :
96 355 : if ((is_basecol(e) && exp_relname(e) && strcmp(exp_relname(e), tname) == 0) ||
97 138 : (is_basecol(e) && !exp_relname(e) && e->l && strcmp(e->l, tname) == 0)) {
98 217 : if (exp_name(e) && exps_bind_column2(exps, tname, exp_name(e), NULL))
99 : rename = 1;
100 : else
101 217 : append(exps, e);
102 : }
103 : }
104 : }
105 :
106 560 : exps = new_exp_list(sql->sa);
107 4930 : for (en = rel->exps->h; en; en = en->next) {
108 4370 : sql_exp *e = en->data;
109 4370 : if (is_basecol(e) && exp_relname(e) && strcmp(exp_relname(e), tname) == 0) {
110 4230 : if (rename)
111 0 : append(exps, exp_alias_ref(sql, e));
112 : else {
113 4230 : sql_exp *ne = exp_ref(sql, e);
114 4230 : exp_setname(sql, ne, tname, exp_name(e));
115 4230 : append(exps, ne);
116 : }
117 : }
118 4370 : if (is_basecol(e) && !exp_relname(e) && e->l && strcmp(e->l, tname) == 0) {
119 0 : if (rename)
120 0 : append(exps, exp_alias_ref(sql, e));
121 : else {
122 0 : sql_exp *ne = exp_ref(sql, e);
123 0 : exp_setname(sql, ne, tname, exp_name(e));
124 0 : append(exps, ne);
125 : }
126 : }
127 :
128 : }
129 560 : if (exps && list_length(exps))
130 : return exps;
131 : }
132 : /* fall through */
133 : default:
134 : return NULL;
135 : }
136 : }
137 :
138 : static sql_exp *
139 0 : rel_lastexp(mvc *sql, sql_rel *rel )
140 : {
141 0 : sql_exp *e;
142 :
143 0 : if (!is_processed(rel) || is_topn(rel->op) || is_sample(rel->op))
144 0 : rel = rel_parent(rel);
145 0 : assert(list_length(rel->exps));
146 0 : if (rel->op == op_project) {
147 0 : list_hash_clear(rel->exps);
148 0 : return exp_ref(sql, rel->exps->t->data);
149 : }
150 0 : assert(is_project(rel->op));
151 0 : e = rel->exps->t->data;
152 0 : return exp_ref(sql, e);
153 : }
154 :
155 : static sql_rel *
156 36634 : rel_orderby(mvc *sql, sql_rel *l)
157 : {
158 36634 : sql_rel *rel = rel_create(sql->sa);
159 36634 : if (!rel)
160 : return NULL;
161 :
162 36634 : assert(l->op == op_project && !l->r);
163 36634 : rel->l = l;
164 36634 : rel->r = NULL;
165 36634 : rel->op = op_project;
166 36634 : rel->exps = rel_projections(sql, l, NULL, 1, 0);
167 36634 : rel->card = l->card;
168 36634 : rel->nrcols = l->nrcols;
169 36634 : return rel;
170 : }
171 :
172 : /* forward refs */
173 : static sql_rel * rel_setquery(sql_query *query, symbol *sq);
174 : static sql_rel * rel_joinquery(sql_query *query, symbol *sq, list *refs);
175 :
176 : static sql_rel *
177 202552 : rel_table_optname(mvc *sql, sql_rel *sq, symbol *optname, list *refs)
178 : {
179 202552 : sql_rel *osq = sq;
180 202552 : node *ne;
181 :
182 202552 : if (optname && optname->token == SQL_NAME) {
183 17993 : dlist *columnrefs = NULL;
184 17993 : char *tname = optname->data.lval->h->data.sval;
185 17993 : list *l = sa_list(sql->sa);
186 :
187 17993 : columnrefs = optname->data.lval->h->next->data.lval;
188 17993 : if (is_topn(sq->op) || is_sample(sq->op) || ((is_simple_project(sq->op) || is_groupby(sq->op)) && sq->r) || is_base(sq->op)) {
189 110 : sq = rel_project(sql->sa, sq, rel_projections(sql, sq, NULL, 1, 0));
190 110 : osq = sq;
191 : }
192 17993 : if (columnrefs && dlist_length(columnrefs) != list_length(sq->exps))
193 6 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: The number of aliases don't match the number of columns (%d != %d)", dlist_length(columnrefs), sq->nrcols);
194 5032 : if (columnrefs && sq->exps) {
195 5032 : dnode *d = columnrefs->h;
196 :
197 5032 : ne = sq->exps->h;
198 5032 : list_hash_clear(sq->exps);
199 20772 : for (; d && ne; d = d->next, ne = ne->next) {
200 10709 : sql_exp *e = ne->data;
201 :
202 10709 : if (exps_bind_column2(l, tname, d->data.sval, NULL))
203 1 : return sql_error(sql, ERR_AMBIGUOUS, SQLSTATE(42000) "SELECT: Duplicate column name '%s.%s'", tname, d->data.sval);
204 10708 : exp_setname(sql, e, tname, d->data.sval );
205 10708 : if (!is_intern(e))
206 10708 : set_basecol(e);
207 10708 : append(l, e);
208 : }
209 : }
210 17986 : if (!columnrefs && sq->exps) {
211 12955 : ne = sq->exps->h;
212 12955 : list_hash_clear(sq->exps);
213 126652 : for (; ne; ne = ne->next) {
214 100742 : sql_exp *e = ne->data;
215 100742 : char *name = NULL;
216 :
217 100742 : if (!is_intern(e)) {
218 100742 : if (!exp_name(e))
219 108 : name = make_label(sql->sa, ++sql->label);
220 100742 : noninternexp_setname(sql, e, tname, name);
221 100742 : set_basecol(e);
222 : }
223 : }
224 : }
225 17986 : if (refs) { /* if this relation is under a FROM clause, check for duplicate names */
226 17936 : if (list_find(refs, tname, (fcmp) &strcmp))
227 6 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: relation name \"%s\" specified more than once", tname);
228 17930 : assert(tname);
229 17930 : list_append(refs, tname);
230 : }
231 : } else {
232 184559 : if (!is_project(sq->op) || is_topn(sq->op) || is_sample(sq->op) || ((is_simple_project(sq->op) || is_groupby(sq->op)) && sq->r)) {
233 58602 : sq = rel_project(sql->sa, sq, rel_projections(sql, sq, NULL, 1, 1));
234 58602 : osq = sq;
235 : }
236 2320922 : for (ne = osq->exps->h; ne; ne = ne->next) {
237 2136363 : sql_exp *e = ne->data;
238 :
239 2136363 : if (!is_intern(e))
240 2009777 : set_basecol(e);
241 : }
242 : }
243 : return osq;
244 : }
245 :
246 : static sql_rel *
247 97575 : rel_subquery_optname(sql_query *query, symbol *ast, list *refs)
248 : {
249 97575 : mvc *sql = query->sql;
250 97575 : SelectNode *sn = (SelectNode *) ast;
251 97575 : exp_kind ek = {type_value, card_relation, TRUE};
252 97575 : sql_rel *sq = rel_subquery(query, ast, ek);
253 :
254 97575 : assert(ast->token == SQL_SELECT);
255 97575 : if (!sq)
256 : return NULL;
257 :
258 97558 : return rel_table_optname(sql, sq, sn->name, refs);
259 : }
260 :
261 : sql_rel *
262 6933 : rel_with_query(sql_query *query, symbol *q )
263 : {
264 6933 : mvc *sql = query->sql;
265 6933 : dnode *d = q->data.lval->h;
266 6933 : symbol *next = d->next->data.sym;
267 6933 : sql_rel *rel;
268 :
269 6933 : if (!stack_push_frame(sql, NULL))
270 0 : return sql_error(sql, 02, SQLSTATE(HY013) MAL_MALLOC_FAIL);
271 : /* first handle all with's (ie inlined views) */
272 19667 : for (d = d->data.lval->h; d; d = d->next) {
273 12740 : symbol *sym = d->data.sym;
274 12740 : dnode *dn = sym->data.lval->h;
275 12740 : char *rname = qname_schema_object(dn->data.lval);
276 12740 : sql_rel *nrel;
277 :
278 12740 : if (frame_find_rel_view(sql, rname)) {
279 1 : stack_pop_frame(sql);
280 1 : return sql_error(sql, 01, SQLSTATE(42000) "View '%s' already declared", rname);
281 : }
282 12739 : nrel = rel_semantic(query, sym);
283 12739 : if (!nrel) {
284 5 : stack_pop_frame(sql);
285 5 : return NULL;
286 : }
287 12734 : if (!stack_push_rel_view(sql, rname, nrel)) {
288 0 : stack_pop_frame(sql);
289 0 : return sql_error(sql, 02, SQLSTATE(HY013) MAL_MALLOC_FAIL);
290 : }
291 12734 : if (!is_project(nrel->op)) {
292 0 : if (is_topn(nrel->op) || is_sample(nrel->op)) {
293 0 : nrel = rel_project(sql->sa, nrel, rel_projections(sql, nrel, NULL, 1, 1));
294 : } else {
295 0 : stack_pop_frame(sql);
296 0 : return NULL;
297 : }
298 : }
299 12734 : assert(is_project(nrel->op));
300 12734 : if (is_project(nrel->op) && nrel->exps) {
301 12734 : node *ne = nrel->exps->h;
302 :
303 56477 : for (; ne; ne = ne->next) {
304 43743 : sql_exp *e = ne->data;
305 43743 : char *name = NULL;
306 :
307 43743 : if (!is_intern(e)) {
308 43743 : if (!exp_name(e))
309 13 : name = make_label(sql->sa, ++sql->label);
310 43743 : noninternexp_setname(sql, e, rname, name);
311 43743 : set_basecol(e);
312 : }
313 : }
314 12734 : list_hash_clear(nrel->exps);
315 : }
316 : }
317 6927 : rel = rel_semantic(query, next);
318 6927 : stack_pop_frame(sql);
319 6927 : return rel;
320 : }
321 :
322 : static sql_rel *
323 59661 : query_exp_optname(sql_query *query, symbol *q, list *refs)
324 : {
325 59661 : mvc *sql = query->sql;
326 59661 : switch (q->token) {
327 943 : case SQL_WITH:
328 : {
329 943 : sql_rel *tq = rel_with_query(query, q);
330 :
331 943 : if (!tq)
332 : return NULL;
333 943 : if (q->data.lval->t->type == type_symbol)
334 943 : return rel_table_optname(sql, tq, q->data.lval->t->data.sym, refs);
335 : return tq;
336 : }
337 58718 : case SQL_JOIN:
338 : {
339 58718 : sql_rel *tq = rel_joinquery(query, q, refs);
340 :
341 58718 : if (!tq)
342 : return NULL;
343 58677 : return rel_table_optname(sql, tq, q->data.lval->t->data.sym, NULL);
344 : }
345 0 : default:
346 0 : (void) sql_error(sql, 02, SQLSTATE(42000) "case %d %s", (int) q->token, token2string(q->token));
347 : }
348 0 : return NULL;
349 : }
350 :
351 : static sql_subfunc *
352 113274 : bind_func_(mvc *sql, char *sname, char *fname, list *ops, sql_ftype type, bool private, bool *found, bool exact)
353 : {
354 113274 : sql_subfunc *sf = NULL;
355 :
356 113499 : if (sql->forward && strcmp(fname, sql->forward->base.name) == 0 &&
357 225 : list_cmp(sql->forward->ops, ops, (fcmp)&arg_subtype_cmp) == 0 &&
358 0 : execute_priv(sql, sql->forward) && type == sql->forward->type)
359 0 : return sql_dup_subfunc(sql->sa, sql->forward, NULL, NULL);
360 113274 : sf = sql_bind_func_(sql, sname, fname, ops, type, private, exact);
361 113274 : if (found)
362 112744 : *found |= sf != NULL;
363 113274 : if (sf && execute_priv(sql, sf->func))
364 : return sf;
365 : return NULL;
366 : }
367 :
368 : static sql_subfunc *
369 617434 : bind_func(mvc *sql, char *sname, char *fname, sql_subtype *t1, sql_subtype *t2, int nr, sql_ftype type, bool private, bool *found, bool exact)
370 : {
371 617434 : list *tl = sa_list(sql->sa);
372 617434 : assert(nr >= 1 && nr <= 2);
373 617434 : append(tl, t1);
374 617434 : if (nr == 2)
375 522736 : append(tl, t2);
376 617434 : sql_subfunc *sf = NULL;
377 :
378 617434 : if (sql->forward) {
379 131598 : if (execute_priv(sql, sql->forward) &&
380 131598 : strcmp(fname, sql->forward->base.name) == 0 &&
381 230 : ((!t1 && list_length(sql->forward->ops) == 0) ||
382 232 : (!t2 && list_length(sql->forward->ops) == 1 && arg_subtype_cmp(sql->forward->ops->h->data, t1) == 0) ||
383 228 : (list_length(sql->forward->ops) == 2 &&
384 0 : arg_subtype_cmp(sql->forward->ops->h->data, t1) == 0 &&
385 2 : arg_subtype_cmp(sql->forward->ops->h->next->data, t2) == 0)) && type == sql->forward->type) {
386 2 : return sql_dup_subfunc(sql->sa, sql->forward, NULL, NULL);
387 : }
388 : }
389 617432 : sf = sql_bind_func_(sql, sname, fname, tl, type, private, exact);
390 617432 : if (found)
391 617432 : *found |= sf != NULL;
392 617432 : if (sf && execute_priv(sql, sf->func))
393 : return sf;
394 : return NULL;
395 : }
396 :
397 : static sql_subfunc *
398 636843 : find_func(mvc *sql, char *sname, char *fname, int len, sql_ftype type, bool private, sql_subfunc *prev, bool *found)
399 : {
400 636843 : sql_subfunc *sf = NULL;
401 :
402 636843 : if (sql->forward && strcmp(fname, sql->forward->base.name) == 0 && list_length(sql->forward->ops) == len && execute_priv(sql, sql->forward) && type == sql->forward->type)
403 0 : return sql_dup_subfunc(sql->sa, sql->forward, NULL, NULL);
404 636843 : sf = sql_find_func(sql, sname, fname, len, type, private, prev);
405 636843 : if (found)
406 0 : *found |= sf != NULL;
407 636843 : if (sf && execute_priv(sql, sf->func))
408 : return sf;
409 : return NULL;
410 : }
411 :
412 : static sql_exp *
413 694833 : exp_fix_scale(mvc *sql, sql_subtype *ct, sql_exp *e)
414 : {
415 694833 : sql_subtype *et = exp_subtype(e);
416 :
417 694833 : if (ct->type->scale == SCALE_FIX && et->type->scale == SCALE_FIX) {
418 82996 : int scale_diff = ((int) ct->scale - (int) et->scale);
419 :
420 82996 : if (scale_diff) {
421 132 : if (scale_diff < 0)
422 : return e;
423 102 : sql_subtype st;
424 102 : int scale = ct->scale;
425 102 : int digits = ((et->type->eclass == EC_NUM)?bits2digits(et->digits):et->digits)-et->scale+scale;
426 102 : (void)sql_find_subtype(&st, ct->type->base.name, digits, scale);
427 102 : return exp_convert(sql, e, et, &st);
428 : }
429 : }
430 : return e;
431 : }
432 :
433 : static lng
434 9649 : rel_get_count(sql_rel *rel)
435 : {
436 31093 : if (!rel)
437 : return 0;
438 31089 : prop *p = NULL;
439 31089 : if (rel->p && (p = find_prop(rel->p, PROP_COUNT)) != NULL)
440 3041 : return p->value.lval;
441 28048 : else if(is_munion(rel->op)) {
442 168 : lng cnt = 0;
443 168 : list *l = rel->l;
444 504 : for (node *n = l->h; n; n = n->next) {
445 336 : lng lcnt = rel_get_count(n->data);
446 336 : if (lcnt == BUN_MAX)
447 : return BUN_MAX;
448 336 : cnt += lcnt;
449 : }
450 168 : return cnt;
451 27880 : } else if(rel->l) {
452 25209 : if (is_select(rel->op) || is_project(rel->op))
453 : return rel_get_count(rel->l);
454 : }
455 : return 0;
456 : }
457 :
458 : #define is_sum_aggr(f) (f->type == F_AGGR && strcmp(f->base.name, "sum") == 0)
459 :
460 : list *
461 738119 : check_arguments_and_find_largest_any_type(mvc *sql, sql_rel *rel, list *exps, sql_subfunc *sf, int maybe_zero_or_one, bool internal)
462 : {
463 738119 : list *nexps = new_exp_list(sql->sa);
464 738119 : sql_subtype *atp = NULL, super, *res = !list_empty(sf->res) ? sf->res->h->data: NULL;
465 738119 : unsigned int digits = 0, scale = 0;
466 :
467 : /* find largest any type argument */
468 2179093 : for (node *n = exps->h, *m = sf->func->ops->h; n && m; n = n->next, m = m->next) {
469 1440974 : sql_arg *a = m->data;
470 1440974 : sql_exp *e = n->data;
471 1440974 : sql_subtype *t = exp_subtype(e);
472 :
473 1440974 : if (a->type.type->eclass == EC_ANY) {
474 265526 : if (t && atp) {
475 114501 : supertype(&super, t, atp);
476 114501 : atp = &super;
477 151025 : } else if (t) {
478 : atp = t;
479 : }
480 : }
481 1440971 : if (t && sf->func->fix_scale == SCALE_FIX && t->type->eclass == EC_DEC) {
482 1264 : if (digits < t->digits)
483 : digits = t->digits;
484 1264 : if (scale < t->scale)
485 : scale = t->scale;
486 : }
487 : }
488 738119 : if (!atp && !list_empty(exps))
489 587095 : atp = exp_subtype(exps->h->data);
490 :
491 738119 : if ((atp && atp->type->localtype == TYPE_void) || !atp) /* NULL */
492 9418 : atp = sql_bind_localtype("str");
493 :
494 738119 : node *n, *m;
495 2179093 : for (n = exps->h, m = sf->func->ops->h; n && m; n = n->next, m = m->next) {
496 1440974 : sql_arg *a = m->data;
497 1440974 : sql_exp *e = n->data;
498 1440974 : sql_subtype *ntp = &a->type, *t = exp_subtype(e);
499 :
500 1440974 : if (!t) {
501 38 : if (a->type.type->eclass == EC_ANY && atp)
502 3 : ntp = sql_create_subtype(sql->sa, atp->type, atp->digits, atp->scale);
503 61 : rel_set_type_param(sql, ntp, rel, e, sf->func->fix_scale != INOUT && !UDF_LANG(sf->func->lang));
504 1440936 : } else if (a->type.type->eclass == EC_ANY && atp) {
505 265523 : ntp = sql_create_subtype(sql->sa, atp->type, atp->digits, atp->scale);
506 1175413 : } else if (t && ntp->digits == 0 && EC_VARCHAR(a->type.type->eclass)) {
507 510941 : ntp = sql_create_subtype(sql->sa, a->type.type, type_digits_to_char_digits(t), 0);
508 664472 : } else if (t && ntp->digits > 0 && a->type.type->eclass == EC_NUM && t->type->eclass == EC_NUM) {
509 359483 : ntp = sql_create_subtype(sql->sa, a->type.type, t->digits, 0);
510 304989 : } else if (t && ntp->scale == 0 && ntp->type->eclass == EC_DEC && EC_VARCHAR(t->type->eclass)) {
511 0 : sql_subtype *res = SA_NEW(sql->sa, sql_subtype);
512 0 : int digits = t->digits?t->digits+3:ntp->digits;
513 0 : (void)sql_find_subtype(res, a->type.type->base.name, digits, 3);
514 0 : ntp = res;
515 304989 : } else if (t && ntp->scale == 0 && ntp->type->eclass == EC_DEC) {
516 4869 : ntp = sql_create_subtype(sql->sa, a->type.type, t->type->eclass == EC_NUM?bits2digits(t->digits):t->digits, t->scale);
517 300120 : } else if (t->type == ntp->type) {
518 298021 : ntp = t;
519 : }
520 1440974 : if (!(e = exp_check_type(sql, ntp, rel, e, type_equal)))
521 : return NULL;
522 1440974 : if (sf->func->fix_scale == SCALE_FIX) {
523 523405 : ntp = sql_create_subtype(sql->sa, a->type.type->localtype?a->type.type:t?t->type:atp->type, digits, scale);
524 523405 : e = exp_fix_scale(sql, ntp, e);
525 917569 : } else if (sf->func->fix_scale == SCALE_EQ) {
526 171428 : e = exp_fix_scale(sql, &a->type, e);
527 : }
528 1440974 : if (maybe_zero_or_one && e->card > CARD_ATOM) {
529 22 : sql_subfunc *zero_or_one = sql_bind_func(sql, "sys", "zero_or_one", exp_subtype(e), NULL, F_AGGR, true, false);
530 22 : e = exp_aggr1(sql->sa, e, zero_or_one, 0, 0, CARD_ATOM, has_nil(e));
531 : }
532 1440974 : append(nexps, e);
533 : }
534 : /* handle any extra arguments for rel_dump/analytic funcs */
535 738338 : for ( ; n; n = n->next)
536 219 : append(nexps, n->data);
537 738119 : if (sf->func->fix_scale == SCALE_FIX || IS_ANALYTIC(sf->func)) {
538 270532 : exps_scale_fix(sf, nexps, atp);
539 467587 : } else if (sf->func->fix_scale == MAX_BITS) {
540 111708 : exps_max_bits(sf, nexps);
541 355879 : } else if (sf->func->fix_scale == SCALE_MUL) {
542 25185 : exps_sum_scales(sf, nexps);
543 330694 : } else if (!internal && sf->func->fix_scale == SCALE_DIV) {
544 2604 : if (!exps_scale_algebra(sql, sf, rel, nexps))
545 : return NULL;
546 328090 : } else if (sf->func->fix_scale == DIGITS_ADD) {
547 181313 : exps_digits_add(sf, nexps);
548 146777 : } else if (sf->func->fix_scale == INOUT) {
549 19015 : exps_inout(sf, nexps);
550 127762 : } else if (is_sum_aggr(sf->func))
551 9313 : exps_largest_int(sf, nexps, rel_get_count(rel));
552 :
553 : /* dirty hack */
554 738117 : if (sf->func->type != F_PROC && sf->func->type != F_UNION && sf->func->type != F_LOADER && res) {
555 733316 : if (res->type->eclass == EC_ANY && atp)
556 73 : sf->res->h->data = sql_create_subtype(sql->sa, atp->type, atp->digits, atp->scale);
557 : }
558 : return nexps;
559 : }
560 :
561 : static char *
562 32 : nary_function_arg_types_2str(mvc *sql, list* types, int N)
563 : {
564 32 : char *arg_list = NULL;
565 32 : int i = 0;
566 :
567 116 : for (node *n = types->h; n && i < N; n = n->next) {
568 84 : sql_subtype *t = (sql_subtype *) n->data;
569 84 : char *tpe = t ? sql_subtype_string(sql->ta, t) : "?";
570 :
571 84 : if (arg_list) {
572 52 : arg_list = sa_message(sql->ta, "%s, %s", arg_list, tpe);
573 : } else {
574 : arg_list = tpe;
575 : }
576 84 : i++;
577 : }
578 32 : return arg_list;
579 : }
580 :
581 : static char *
582 35 : file_loader_add_table_column_types(mvc *sql, sql_subfunc *f, list *exps, list *res_exps, char *tname)
583 : {
584 35 : sql_exp *file = exps->h->data;
585 35 : if (!exp_is_atom(file))
586 : return "Filename missing";
587 :
588 35 : atom *a = file->l;
589 35 : if (a->data.vtype != TYPE_str || !a->data.val.sval)
590 : return "Filename missing";
591 :
592 35 : char *filename = a->data.val.sval;
593 35 : if (strcmp(filename, "") == 0)
594 : return "Filename missing";
595 :
596 33 : char *ext = strrchr(filename, '.'), *ep = ext;
597 :
598 33 : if (ext) {
599 30 : ext = ext + 1;
600 30 : ext = mkLower(sa_strdup(sql->sa, ext));
601 : }
602 30 : if (!ext)
603 3 : return "Filename extension missing";
604 :
605 30 : file_loader_t *fl = fl_find(ext);
606 30 : if (!fl) {
607 : /* maybe compressed */
608 10 : char *p = ep - 1;
609 66 : while (p > filename && *p != '.')
610 56 : p--;
611 10 : if (p != filename) {
612 8 : ext = p + 1;
613 8 : ext = sa_strdup(sql->sa, ext);
614 8 : char *d = strchr(ext, '.');
615 8 : assert(d);
616 8 : *d = 0;
617 8 : fl = fl_find(ext);
618 : }
619 10 : if (!fl) /* fallback */
620 2 : fl = fl_find("csv");
621 2 : if (!fl) /* not expected */
622 0 : return sa_message(sql->ta, "Filename extension '%s' missing", ext?ext:"");
623 : }
624 30 : str err = fl->add_types(sql, f, filename, res_exps, tname);
625 30 : if (err)
626 : return err;
627 16 : sql_subtype *st = sql_bind_localtype("str");
628 16 : sql_exp *ext_exp = exp_atom(sql->sa, atom_string(sql->sa, st, ext));
629 16 : if (!ext_exp)
630 : return MAL_MALLOC_FAIL;
631 16 : append(exps, ext_exp);
632 16 : return NULL;
633 : }
634 :
635 : static sql_rel *
636 35 : rel_file_loader(mvc *sql, list *exps, list *tl, char *tname)
637 : {
638 35 : sql_subfunc *f = NULL;
639 35 : bool found = false;
640 :
641 35 : if ((f = bind_func_(sql, NULL, "file_loader", tl, F_UNION, true, &found, false))) {
642 35 : list *nexps = exps;
643 35 : if (list_empty(tl) || f->func->vararg || (nexps = check_arguments_and_find_largest_any_type(sql, NULL, exps, f, 1, false))) {
644 35 : list *res_exps = sa_list(sql->sa);
645 35 : if (list_length(exps) == 1 && f && f->func->varres && strlen(f->func->mod) == 0 && strlen(f->func->imp) == 0) {
646 35 : char *err = file_loader_add_table_column_types(sql, f, nexps, res_exps, tname);
647 35 : if (err)
648 19 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: file_loader function failed '%s'", err);
649 : }
650 16 : sql_exp *e = exp_op(sql->sa, nexps, f);
651 16 : sql_rel *rel = rel_table_func(sql->sa, NULL, e, res_exps, TABLE_PROD_FUNC);
652 16 : if (rel)
653 16 : rel = rel_project(sql->sa, rel, exps_alias(sql, res_exps));
654 16 : return rel;
655 : }
656 : }
657 : return NULL;
658 : }
659 :
660 : sql_exp *
661 10743 : find_table_function(mvc *sql, char *sname, char *fname, list *exps, list *tl, sql_ftype type)
662 : {
663 10743 : bool found = false;
664 10743 : sql_subfunc *f = NULL;
665 :
666 10743 : assert(type == F_UNION || type == F_LOADER);
667 10743 : if ((f = bind_func_(sql, sname, fname, tl, type, false, &found, false))) {
668 10723 : list *nexps = exps;
669 10723 : if (list_empty(tl) || f->func->vararg || (nexps = check_arguments_and_find_largest_any_type(sql, NULL, exps, f, 1, false)))
670 10723 : return exp_op(sql->sa, nexps, f);
671 0 : found = false;
672 : }
673 20 : char *arg_list = list_length(tl) ? nary_function_arg_types_2str(sql, tl, list_length(tl)) : NULL;
674 55 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: %s %s function %s%s%s'%s'(%s)",
675 20 : found ? "insufficient privileges for" : "no such", type == F_UNION ? "table returning" : "loader", sname ? "'":"", sname ? sname : "",
676 : sname ? "'.":"", fname, arg_list ? arg_list : "");
677 : }
678 :
679 : static sql_rel *
680 10759 : rel_named_table_function(sql_query *query, sql_rel *rel, symbol *ast, int lateral, list *refs)
681 : {
682 10759 : mvc *sql = query->sql;
683 10759 : list *exps = NULL, *tl;
684 10759 : node *m;
685 10759 : exp_kind ek = {type_value, card_relation, TRUE};
686 10759 : sql_rel *sq = NULL, *outer = NULL;
687 10759 : sql_exp *e = NULL;
688 10759 : sql_subfunc *sf = NULL;
689 10759 : symbol *sym = ast->data.lval->h->data.sym, *subquery = NULL;
690 10759 : dnode *l = sym->data.lval->h, *n;
691 10759 : char *tname = NULL;
692 10759 : char *fname = qname_schema_object(l->data.lval);
693 10759 : char *sname = qname_schema(l->data.lval);
694 :
695 10759 : tl = sa_list(sql->sa);
696 10759 : exps = sa_list(sql->sa);
697 10759 : if (l->next)
698 10759 : l = l->next; /* skip distinct */
699 10759 : if (l->next) { /* table call with subquery */
700 1034 : int is_value = 1;
701 1034 : if (l->next->type == type_symbol || l->next->type == type_list) {
702 1034 : exp_kind iek = {type_value, card_set, TRUE};
703 1034 : int count = 0;
704 :
705 1034 : if (l->next->type == type_symbol)
706 : n = l->next;
707 : else
708 673 : n = l->next->data.lval->h;
709 :
710 3667 : for (dnode *m = n; m; m = m->next) {
711 2633 : if (m->type == type_symbol && m->data.sym->token == SQL_SELECT)
712 2633 : subquery = m->data.sym;
713 2633 : count++;
714 : }
715 1034 : if (subquery && count > 1)
716 17 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: The input for the table returning function %s%s%s'%s' must be either a single sub query, or a list of values",
717 : sname ? "'":"", sname ? sname : "", sname ? "'.":"", fname);
718 :
719 1029 : if (subquery) {
720 40 : if (!(sq = rel_subquery(query, subquery, ek)))
721 : return NULL;
722 : is_value = 0;
723 : } else {
724 3561 : for ( ; n; n = n->next) {
725 2578 : sql_exp *e = rel_value_exp(query, &outer, n->data.sym, sql_sel | sql_from, iek);
726 :
727 2578 : if (!e)
728 : return NULL;
729 2572 : append(exps, e);
730 2572 : is_value &= exp_is_atom(e);
731 : }
732 983 : if (!is_value || (lateral && outer))
733 14 : sq = rel_project(sql->sa, NULL, exps);
734 14 : if (lateral && outer) {
735 0 : sq = rel_crossproduct(sql->sa, sq, outer, op_join);
736 0 : set_dependent(sq);
737 0 : set_processed(sq);
738 : }
739 : }
740 : }
741 1022 : if (!is_value && (!sq || (!lateral && outer)))
742 0 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: no such table returning function %s%s%s'%s'", sname ? "'":"", sname ? sname : "", sname ? "'.":"", fname);
743 1022 : if (!is_value) {
744 53 : if (list_length(exps))
745 14 : exps = sa_list(sql->sa);
746 171 : for (node *en = sq->exps->h; en; en = en->next) {
747 118 : sql_exp *e = en->data;
748 :
749 118 : if (!e->alias.label)
750 28 : exp_label(sql->sa, e, ++sql->label);
751 118 : sql_exp *ne = exp_ref(sql, e);
752 : /* allow for table functions with table input */
753 118 : ne->card = CARD_ATOM;
754 118 : exp_setname(sql, ne, tname, exp_name(e));
755 118 : append(exps, ne);
756 118 : append(tl, exp_subtype(e));
757 : }
758 : } else {
759 3516 : for (node *en = exps->h; en; en = en->next)
760 2547 : append(tl, exp_subtype(en->data));
761 : }
762 : }
763 :
764 10747 : rel = NULL;
765 10747 : if (ast->data.lval->t->type == type_symbol && ast->data.lval->t->data.sym)
766 1193 : tname = ast->data.lval->t->data.sym->data.lval->h->data.sval;
767 : else
768 9554 : tname = make_label(sql->sa, ++sql->label);
769 :
770 10747 : if (!sname && strcmp(fname, "file_loader") == 0) {
771 35 : rel = rel_file_loader(sql, exps, tl, tname);
772 35 : if (!rel)
773 : return NULL;
774 20437 : } else if (!(e = find_table_function(sql, sname, fname, list_empty(exps) ? NULL : exps, tl, F_UNION)))
775 : return NULL;
776 :
777 10693 : if (!rel) {
778 10693 : rel = sq;
779 :
780 : /* column or table function */
781 10693 : sf = e->f;
782 10693 : if (e->type != e_func || sf->func->type != F_UNION)
783 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: '%s' does not return a table", exp_func_name(e));
784 :
785 10693 : if (sq) {
786 171 : for (node *n = sq->exps->h, *m = sf->func->ops->h ; n && m ; n = n->next, m = m->next) {
787 118 : sql_exp *e = (sql_exp*) n->data;
788 118 : sql_arg *a = (sql_arg*) m->data;
789 118 : if (!exp_subtype(e) && rel_set_type_param(sql, &(a->type), sq, e, 0) < 0)
790 : return NULL;
791 : }
792 : }
793 :
794 : /* for each column add table.column name */
795 10693 : exps = new_exp_list(sql->sa);
796 105730 : for (m = sf->func->res->h; m; m = m->next) {
797 95037 : sql_arg *a = m->data;
798 95037 : sql_exp *e = exp_column(sql->sa, tname, a->name, &a->type, CARD_MULTI, 1, 0, 0);
799 95037 : e->alias.label = -(sql->nid++);
800 :
801 95037 : set_basecol(e);
802 95037 : append(exps, e);
803 : }
804 21333 : rel = rel_table_func(sql->sa, rel, e, exps, (sq)?TABLE_FROM_RELATION:TABLE_PROD_FUNC);
805 : }
806 10709 : if (ast->data.lval->t->type == type_symbol && ast->data.lval->t->data.sym && ast->data.lval->t->data.sym->data.lval->h->next->data.lval) {
807 27 : rel = rel_table_optname(sql, rel, ast->data.lval->t->data.sym, refs);
808 10682 : } else if (refs) { /* if this relation is under a FROM clause, check for duplicate names */
809 10682 : if (list_find(refs, tname, (fcmp) &strcmp))
810 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: relation name \"%s\" specified more than once", tname);
811 10682 : list_append(refs, tname);
812 : }
813 : return rel;
814 : }
815 :
816 : static sql_exp *
817 1827 : rel_op_(mvc *sql, char *sname, char *fname, exp_kind ek)
818 : {
819 1827 : bool found = false;
820 1827 : sql_subfunc *f = NULL;
821 1827 : sql_ftype type = (ek.card == card_loader)?F_LOADER:((ek.card == card_none)?F_PROC:
822 : ((ek.card == card_relation)?F_UNION:F_FUNC));
823 :
824 1827 : if ((f = bind_func_(sql, sname, fname, NULL, type, false, &found, true))) {
825 1811 : if (check_card(ek.card, f))
826 1811 : return exp_op(sql->sa, NULL, f);
827 0 : found = false;
828 : }
829 32 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: %s operator %s%s%s'%s'()",
830 16 : found ? "insufficient privileges for" : "no such", sname ? "'":"", sname ? sname : "", sname ? "'.":"", fname);
831 : }
832 :
833 : static sql_exp*
834 4108 : exp_tuples_set_supertype(mvc *sql, list *tuple_values, sql_exp *tuples)
835 : {
836 4108 : assert(is_values(tuples));
837 4108 : list *vals = exp_get_values(tuples);
838 4108 : if (!vals || !vals->h)
839 : return NULL;
840 :
841 4108 : int tuple_width = list_length(tuple_values), i;
842 4108 : sql_subtype *types = SA_NEW_ARRAY(sql->sa, sql_subtype, tuple_width);
843 4108 : bool *has_type = SA_NEW_ARRAY(sql->sa, bool, tuple_width);
844 4108 : node *n;
845 :
846 4108 : memset(has_type, 0, sizeof(bool)*tuple_width);
847 13373 : for(n = tuple_values->h, i = 0; n; n = n->next, i++) {
848 9265 : sql_exp *e = n->data;
849 9265 : if (exp_subtype(e)) {
850 9263 : types[i] = *exp_subtype(e);
851 9263 : has_type[i] = 1;
852 : }
853 : }
854 :
855 8218 : for (node *m = vals->h; m; m = m->next) {
856 4110 : sql_exp *tuple = m->data;
857 4110 : if (is_values(tuple)) {
858 3 : list *exps = tuple->f;
859 9 : for(n = exps->h, i = 0; n; n = n->next, i++) {
860 6 : sql_subtype *tpe;
861 6 : sql_exp *e = n->data;
862 :
863 6 : if (has_type[i] && e->type == e_atom && !e->l && !e->r && !e->f && !e->tpe.type) {
864 0 : if (set_type_param(sql, types+i, e->flag) == 0)
865 0 : e->tpe = types[i];
866 : else
867 : return NULL;
868 : }
869 6 : tpe = exp_subtype(e);
870 6 : if (!tpe)
871 : return NULL;
872 6 : if (has_type[i] && tpe) {
873 6 : supertype(types+i, types+i, tpe);
874 : } else {
875 0 : has_type[i] = 1;
876 0 : types[i] = *tpe;
877 : }
878 : }
879 : } else {
880 4107 : sql_rel *tuple_relation = exp_rel_get_rel(sql->sa, tuple);
881 :
882 13370 : for(n = tuple_relation->exps->h, i = 0; n; n = n->next, i++) {
883 9263 : sql_subtype *tpe;
884 9263 : sql_exp *e = n->data;
885 :
886 9263 : if (has_type[i] && e->type == e_atom && !e->l && !e->r && !e->f && !e->tpe.type) {
887 5 : if (set_type_param(sql, types+i, e->flag) == 0)
888 5 : e->tpe = types[i];
889 : else
890 : return NULL;
891 : }
892 9263 : tpe = exp_subtype(e);
893 9263 : if (!tpe)
894 : return NULL;
895 9263 : if (has_type[i] && tpe) {
896 9261 : cmp_supertype(types+i, types+i, tpe);
897 : } else {
898 2 : has_type[i] = 1;
899 2 : types[i] = *tpe;
900 : }
901 : }
902 : }
903 : }
904 :
905 8218 : for (node *m = vals->h; m; m = m->next) {
906 4110 : sql_exp *tuple = m->data;
907 4110 : if (is_values(tuple)) {
908 3 : list *exps = tuple->f;
909 3 : list *nexps = sa_list(sql->sa);
910 9 : for(n = exps->h, i = 0; n; n = n->next, i++) {
911 6 : sql_exp *e = n->data;
912 :
913 6 : e = exp_check_type(sql, types+i, NULL, e, type_equal);
914 6 : if (!e)
915 : return NULL;
916 6 : exp_label(sql->sa, e, ++sql->label);
917 6 : append(nexps, e);
918 : }
919 3 : tuple->f = nexps;
920 : } else {
921 4107 : sql_rel *tuple_relation = exp_rel_get_rel(sql->sa, tuple);
922 :
923 4107 : list *nexps = sa_list(sql->sa);
924 13370 : for(n = tuple_relation->exps->h, i = 0; n; n = n->next, i++) {
925 9263 : sql_exp *e = n->data;
926 :
927 9263 : e = exp_check_type(sql, types+i, NULL, e, type_equal);
928 9263 : if (!e)
929 : return NULL;
930 9263 : append(nexps, e);
931 : }
932 4107 : tuple_relation->exps = nexps;
933 : }
934 : }
935 : return tuples;
936 : }
937 :
938 : static int
939 9265 : rel_binop_check_types(mvc *sql, sql_rel *rel, sql_exp *ls, sql_exp *rs, int upcast)
940 : {
941 9265 : sql_subtype *t1 = exp_subtype(ls), *t2 = exp_subtype(rs);
942 :
943 9265 : if (!t1 || !t2) {
944 2 : if (t2 && !t1 && rel_set_type_param(sql, t2, rel, ls, upcast) < 0)
945 : return -1;
946 2 : if (t1 && !t2 && rel_set_type_param(sql, t1, rel, rs, upcast) < 0)
947 : return -1;
948 : }
949 9265 : if (!exp_subtype(ls) && !exp_subtype(rs)) {
950 0 : (void) sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) on both sides of an expression");
951 0 : return -1;
952 : }
953 : return 0;
954 : }
955 :
956 : static list *
957 4108 : tuples_check_types(mvc *sql, list *tuple_values, sql_exp *tuples)
958 : {
959 4108 : list *tuples_list = exp_get_values(tuples);
960 4108 : sql_exp *first_tuple = tuples_list->h->data;
961 4108 : list *nvalues = sa_list(sql->sa);
962 4108 : if (is_values(first_tuple)) {
963 1 : list *vals = first_tuple->f;
964 :
965 3 : for (node *n = tuple_values->h, *m = vals->h; n && m; n = n->next, m = m->next) {
966 2 : sql_exp *le = n->data, *re = m->data;
967 :
968 2 : if (rel_binop_check_types(sql, NULL, le, re, 0) < 0)
969 : return NULL;
970 2 : if ((le = exp_check_type(sql, exp_subtype(re), NULL, le, type_equal)) == NULL)
971 : return NULL;
972 2 : append(nvalues, le);
973 : }
974 : return nvalues;
975 : } else {
976 4107 : sql_rel *tuple_relation = exp_rel_get_rel(sql->sa, first_tuple);
977 :
978 4107 : assert(list_length(tuple_values) == list_length(tuple_relation->exps));
979 13370 : for (node *n = tuple_values->h, *m = tuple_relation->exps->h; n && m; n = n->next, m = m->next) {
980 9263 : sql_exp *le = n->data, *re = m->data;
981 :
982 9263 : if (rel_binop_check_types(sql, NULL, le, re, 0) < 0)
983 : return NULL;
984 9263 : if ((le = exp_check_type(sql, exp_subtype(re), NULL, le, type_equal)) == NULL)
985 : return NULL;
986 9263 : append(nvalues, le);
987 : }
988 : return nvalues;
989 : }
990 : return tuple_values;
991 : }
992 :
993 : static sql_rel *
994 3756 : rel_values(sql_query *query, symbol *tableref, list *refs)
995 : {
996 3756 : mvc *sql = query->sql;
997 3756 : sql_rel *r = NULL;
998 3756 : dlist *rowlist = tableref->data.lval->h->data.lval;
999 3756 : symbol *optname = tableref->data.lval->t->type == type_symbol ? tableref->data.lval->t->data.sym : NULL;
1000 3756 : node *m;
1001 3756 : list *exps = sa_list(sql->sa);
1002 3756 : exp_kind ek = {type_value, card_value, TRUE};
1003 :
1004 15034 : for (dnode *o = rowlist->h; o; o = o->next) {
1005 11288 : dlist *values = o->data.lval;
1006 :
1007 11288 : if (!list_empty(exps) && list_length(exps) != dlist_length(values)) {
1008 3 : return sql_error(sql, 02, SQLSTATE(42000) "VALUES: number of columns doesn't match between rows");
1009 : } else {
1010 11285 : dnode *n;
1011 :
1012 11285 : if (list_empty(exps)) {
1013 10720 : for (n = values->h; n; n = n->next) {
1014 6964 : sql_exp *vals = exp_values(sql->sa, sa_list(sql->sa));
1015 :
1016 6964 : exp_label(sql->sa, vals, ++sql->label);
1017 6964 : list_append(exps, vals);
1018 : }
1019 : }
1020 34528 : for (n = values->h, m = exps->h; n && m; n = n->next, m = m->next) {
1021 23250 : sql_exp *vals = m->data;
1022 23250 : list *vals_list = vals->f;
1023 23250 : sql_exp *e = rel_value_exp(query, NULL, n->data.sym, sql_sel | sql_values, ek);
1024 23250 : if (!e)
1025 : return NULL;
1026 23243 : list_append(vals_list, e);
1027 : }
1028 : }
1029 : }
1030 :
1031 : /* loop to check types and cardinality */
1032 3746 : unsigned int card = exps->h && list_length(((sql_exp*)exps->h->data)->f) > 1 ? CARD_MULTI : CARD_ATOM;
1033 10693 : for (m = exps->h; m; m = m->next) {
1034 6950 : sql_exp *e = m->data;
1035 :
1036 6950 : if (!(e = exp_values_set_supertype(sql, e, NULL)))
1037 : return NULL;
1038 6947 : e->card = card;
1039 6947 : m->data = e;
1040 : }
1041 :
1042 3743 : r = rel_project(sql->sa, NULL, exps);
1043 3743 : r->nrcols = list_length(exps);
1044 3743 : r->card = card;
1045 3743 : return rel_table_optname(sql, r, optname, refs);
1046 : }
1047 :
1048 : static int
1049 497595 : check_is_lateral(symbol *tableref)
1050 : {
1051 497595 : if (tableref->token == SQL_NAME || tableref->token == SQL_TABLE ||
1052 : tableref->token == SQL_VALUES) {
1053 446190 : if (dlist_length(tableref->data.lval) == 3)
1054 445357 : return tableref->data.lval->h->next->data.i_val;
1055 : return 0;
1056 : } else if (tableref->token == SQL_WITH) {
1057 941 : if (dlist_length(tableref->data.lval) == 4)
1058 5 : return tableref->data.lval->h->next->next->data.i_val;
1059 : return 0;
1060 : } else if (tableref->token == SQL_SELECT) {
1061 3612 : SelectNode *sn = (SelectNode *) tableref;
1062 3612 : return sn->lateral;
1063 : } else if (tableref->token == SQL_EXCEPT || tableref->token == SQL_INTERSECT ||
1064 : tableref->token == SQL_UNION) {
1065 10678 : if (dlist_length(tableref->data.lval) == 6)
1066 9016 : return tableref->data.lval->h->next->next->next->next->data.i_val;
1067 : return 0;
1068 : } else {
1069 : return 0;
1070 : }
1071 : }
1072 :
1073 : static sql_rel *
1074 25 : rel_reduce_on_column_privileges(mvc *sql, sql_rel *rel, sql_table *t)
1075 : {
1076 25 : list *exps = sa_list(sql->sa);
1077 :
1078 99 : for (node *n = rel->exps->h, *m = ol_first_node(t->columns); n && m; n = n->next, m = m->next) {
1079 74 : sql_exp *e = n->data;
1080 74 : sql_column *c = m->data;
1081 :
1082 74 : if (column_privs(sql, c, PRIV_SELECT))
1083 12 : append(exps, e);
1084 : }
1085 25 : if (!list_empty(exps)) {
1086 9 : rel->exps = exps;
1087 9 : return rel;
1088 : }
1089 : return NULL;
1090 : }
1091 :
1092 : sql_rel *
1093 678562 : table_ref(sql_query *query, symbol *tableref, int lateral, list *refs)
1094 : {
1095 678562 : mvc *sql = query->sql;
1096 678562 : char *tname = NULL;
1097 678562 : sql_table *t = NULL;
1098 678562 : sql_rel *res = NULL;
1099 :
1100 678562 : if (tableref->token == SQL_NAME) {
1101 467608 : dlist *name = tableref->data.lval->h->data.lval;
1102 467608 : sql_rel *temp_table = NULL;
1103 467608 : char *sname = qname_schema(name);
1104 467608 : int allowed = 1;
1105 :
1106 467608 : tname = qname_schema_object(name);
1107 :
1108 467608 : if (dlist_length(name) > 2)
1109 4 : return sql_error(sql, 02, SQLSTATE(3F000) "SELECT: only a schema and table name expected");
1110 :
1111 467604 : if (!sname)
1112 113465 : temp_table = stack_find_rel_view(sql, tname);
1113 113465 : if (!temp_table)
1114 450772 : t = find_table_or_view_on_scope(sql, NULL, sname, tname, "SELECT", false);
1115 467604 : if (!t && !temp_table)
1116 : return NULL;
1117 467505 : if (!temp_table && !table_privs(sql, t, PRIV_SELECT))
1118 467505 : allowed = 0;
1119 :
1120 467505 : if (tableref->data.lval->t->type == type_symbol && tableref->data.lval->t->data.sym) /* AS */
1121 273403 : tname = tableref->data.lval->t->data.sym->data.lval->h->data.sval;
1122 467505 : if (temp_table && !t) {
1123 16832 : node *n;
1124 16832 : int needed = !is_simple_project(temp_table->op);
1125 :
1126 16832 : if (is_basetable(temp_table->op) && !temp_table->exps) {
1127 0 : if (strcmp(rel_base_name(temp_table), tname) != 0)
1128 0 : rel_base_rename(temp_table, tname);
1129 : } else {
1130 60214 : for (n = temp_table->exps->h; n && !needed; n = n->next) {
1131 43382 : sql_exp *e = n->data;
1132 :
1133 43382 : if (!exp_relname(e) || strcmp(exp_relname(e), tname) != 0)
1134 : needed = 1;
1135 : }
1136 :
1137 16832 : if (needed) {
1138 6817 : list *exps = rel_projections(sql, temp_table, NULL, 1, 1);
1139 :
1140 6817 : temp_table = rel_project(sql->sa, temp_table, exps);
1141 24458 : for (n = exps->h; n; n = n->next) {
1142 17641 : sql_exp *e = n->data;
1143 :
1144 17641 : noninternexp_setname(sql, e, tname, NULL);
1145 17641 : set_basecol(e);
1146 : }
1147 6817 : list_hash_clear(exps);
1148 : }
1149 : }
1150 16832 : if (temp_table && tableref->data.lval->t->type == type_symbol && tableref->data.lval->t->data.sym && tableref->data.lval->t->data.sym->data.lval->h->next->data.lval) /* AS with column aliases */
1151 1 : temp_table = rel_table_optname(sql, temp_table, tableref->data.lval->t->data.sym, refs);
1152 16832 : if (allowed)
1153 : return temp_table;
1154 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: access denied for %s to table '%s'", get_string_global_var(sql, "current_user"), tname);
1155 450673 : } else if (isView(t)) {
1156 : /* instantiate base view */
1157 69528 : node *n,*m;
1158 69528 : sql_rel *rel;
1159 :
1160 69528 : if (sql->emode == m_deps) {
1161 24382 : rel = rel_basetable(sql, t, tname);
1162 24382 : if (!allowed)
1163 0 : rel_base_disallow(rel);
1164 : } else {
1165 : /* when recreating a view, the view itself can't be found */
1166 45146 : if (sql->objid && sql->objid == t->base.id)
1167 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: attempting to recursively bind view '%s'.'%s'", t->s->base.name, tname);
1168 45145 : rel = rel_parse(sql, t->s, t->query, m_instantiate);
1169 45145 : if (rel && sql->emode == m_deps)
1170 0 : rel = rel_unnest(sql, rel);
1171 : }
1172 :
1173 69525 : if (!rel)
1174 2 : return NULL;
1175 : /* Rename columns of the rel_parse relation */
1176 69525 : if (sql->emode != m_deps) {
1177 45143 : assert(is_project(rel->op));
1178 45143 : set_processed(rel);
1179 45143 : if (is_mset(rel->op) || is_simple_project(rel->op) || (is_groupby(rel->op) && !list_empty(rel->r))) {
1180 : /* it's unsafe to set the projection names because of possible dependent sorting/grouping columns */
1181 45143 : rel = rel_project(sql->sa, rel, rel_projections(sql, rel, NULL, 0, 0));
1182 45143 : set_processed(rel);
1183 : }
1184 407916 : for (n = ol_first_node(t->columns), m = rel->exps->h; n && m; n = n->next, m = m->next) {
1185 362773 : sql_column *c = n->data;
1186 362773 : sql_exp *e = m->data;
1187 :
1188 362773 : exp_setname(sql, e, tname, c->base.name);
1189 362773 : set_basecol(e);
1190 : }
1191 45143 : list_hash_clear(rel->exps);
1192 : }
1193 69525 : if (rel && !allowed && t->query && (rel = rel_reduce_on_column_privileges(sql, rel, t)) == NULL)
1194 16 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: access denied for %s to view '%s.%s'", get_string_global_var(sql, "current_user"), t->s->base.name, tname);
1195 69509 : return rel;
1196 : }
1197 381145 : if ((isMergeTable(t) || isReplicaTable(t)) && list_length(t->members)==0)
1198 14 : return sql_error(sql, 02, SQLSTATE(42000) "%s '%s'.'%s' should have at least one table associated",
1199 14 : TABLE_TYPE_DESCRIPTION(t->type, t->properties), t->s->base.name, tname);
1200 381131 : res = rel_basetable(sql, t, tname);
1201 381131 : if (!allowed) {
1202 53 : rel_base_disallow(res);
1203 53 : if (rel_base_has_column_privileges(sql, res) == 0)
1204 62 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: access denied for %s to %s '%s.%s'", get_string_global_var(sql, "current_user"), isView(t) ? "view" : "table", t->s->base.name, tname);
1205 : }
1206 381100 : if (tableref->data.lval->t->type == type_symbol && tableref->data.lval->t->data.sym && tableref->data.lval->t->data.sym->data.lval->h->next->data.lval) { /* AS with column aliases */
1207 8 : res = rel_table_optname(sql, res, tableref->data.lval->t->data.sym, refs);
1208 381092 : } else if (refs) { /* if this relation is under a FROM clause, check for duplicate names */
1209 381087 : if (list_find(refs, tname, (fcmp) &strcmp))
1210 7 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: relation name \"%s\" specified more than once", tname);
1211 381080 : assert(tname);
1212 381080 : list_append(refs, tname);
1213 : }
1214 381093 : return res;
1215 : } else if (tableref->token == SQL_VALUES) {
1216 1361 : return rel_values(query, tableref, refs);
1217 : } else if (tableref->token == SQL_TABLE) {
1218 10759 : return rel_named_table_function(query, NULL, tableref, lateral, refs);
1219 : } else if (tableref->token == SQL_SELECT) {
1220 97575 : return rel_subquery_optname(query, tableref, refs);
1221 : } else if (tableref->token == SQL_UNION || tableref->token == SQL_EXCEPT || tableref->token == SQL_INTERSECT) {
1222 : /* subqueries will be called, ie no need to test for duplicate references */
1223 41598 : sql_rel *tq = rel_setquery(query, tableref);
1224 :
1225 41598 : if (!tq)
1226 : return NULL;
1227 : /* look for lateral joins */
1228 41595 : symbol *optname = tableref->data.lval->t->type == type_symbol ? tableref->data.lval->t->data.sym : NULL;
1229 41595 : return rel_table_optname(sql, tq, optname, refs);
1230 : } else {
1231 59661 : return query_exp_optname(query, tableref, refs);
1232 : }
1233 : }
1234 :
1235 : static sql_exp *
1236 120838 : rel_exp_variable_on_scope(mvc *sql, const char *sname, const char *vname)
1237 : {
1238 120838 : sql_subtype *tpe = NULL;
1239 120838 : sql_var *var = NULL;
1240 120838 : sql_arg *a = NULL;
1241 120838 : int level = 1;
1242 :
1243 120838 : if (find_variable_on_scope(sql, sname, vname, &var, &a, &tpe, &level, "SELECT")) {
1244 119930 : if (var) /* if variable is known from the stack or a global var */
1245 37360 : return exp_param_or_declared(sql->sa, var->sname ? sa_strdup(sql->sa, var->sname) : NULL, sa_strdup(sql->sa, var->name), &(var->var.tpe), level);
1246 87550 : if (a) /* if variable is a parameter */
1247 87550 : return exp_param_or_declared(sql->sa, NULL, sa_strdup(sql->sa, vname), &(a->type), level);
1248 : }
1249 : return NULL;
1250 : }
1251 :
1252 : static sql_exp *
1253 9247 : exps_get_exp(list *exps, int nth)
1254 : {
1255 9247 : node *n = NULL;
1256 9247 : int i = 0;
1257 :
1258 9247 : if (exps)
1259 27170 : for (n=exps->h, i=1; n && i<nth; n=n->next, i++)
1260 : ;
1261 9247 : if (n && i == nth)
1262 9244 : return n->data;
1263 : return NULL;
1264 : }
1265 :
1266 : static sql_rel *
1267 27680 : rel_find_groupby(sql_rel *groupby)
1268 : {
1269 27680 : if (groupby && !is_processed(groupby) && !is_base(groupby->op)) {
1270 37279 : while(!is_processed(groupby) && !is_base(groupby->op)) {
1271 29481 : if (is_groupby(groupby->op) || !groupby->l)
1272 : break;
1273 : if (groupby->l)
1274 : groupby = groupby->l;
1275 : }
1276 27556 : if (groupby && is_groupby(groupby->op))
1277 19758 : return groupby;
1278 : }
1279 : return NULL;
1280 : }
1281 :
1282 : static int
1283 306 : is_groupby_col(sql_rel *gb, sql_exp *e)
1284 : {
1285 306 : gb = rel_find_groupby(gb);
1286 :
1287 306 : if (gb) {
1288 174 : if (exp_relname(e)) {
1289 163 : if (exp_name(e) && exps_bind_column2(gb->r, exp_relname(e), exp_name(e), NULL))
1290 : return 1;
1291 : } else {
1292 11 : if (exp_name(e) && exps_bind_column(gb->r, exp_name(e), NULL, NULL, 1))
1293 : return 1;
1294 : }
1295 : }
1296 : return 0;
1297 : }
1298 :
1299 : static void
1300 4726 : set_dependent_( sql_rel *r)
1301 : {
1302 4726 : if (is_select(r->op))
1303 3586 : r = r->l;
1304 4726 : if (r && is_join(r->op))
1305 1194 : set_dependent(r);
1306 4726 : }
1307 :
1308 : static
1309 15 : sql_rel* find_union(visitor *v, sql_rel *rel) {
1310 15 : if (rel->op == op_union || rel->op == op_munion)
1311 1 : v->data = rel;
1312 15 : return rel;
1313 : }
1314 :
1315 : static inline
1316 54 : bool group_by_pk_project_uk_cond(mvc* sql, sql_rel* inner, sql_exp* exp,const char* sname, const char* tname) {
1317 54 : sql_table* t = find_table_or_view_on_scope(sql, NULL, sname, tname, "SELECT", false);
1318 54 : bool allow = false;
1319 54 : if (t) {
1320 17 : sql_idx* pki = NULL;
1321 17 : list *ukil = sa_list(sql->sa);
1322 :
1323 23 : for (node * n = ol_first_node(t->idxs); n; n = n->next) {
1324 6 : sql_idx *i = n->data;
1325 6 : if (!i->key)
1326 1 : continue;
1327 5 : switch (i->key->type) {
1328 3 : case pkey:
1329 3 : pki = i;
1330 3 : continue;
1331 2 : case ukey:
1332 : case unndkey:
1333 2 : list_append(ukil, i);
1334 2 : continue;
1335 0 : default:
1336 0 : continue;
1337 : }
1338 : }
1339 17 : if (pki && pki->columns->cnt == 1 && inner->r && ((list*) inner->r)->cnt == 1) {
1340 : /* for now only check simple case where primary key and group by expression is a single column*/
1341 3 : sql_exp* gbe = ((list*) inner->r)->h->data;
1342 3 : sql_column* pkc = ((sql_kc *)pki->columns->h->data)->c;
1343 3 : if (gbe->type == e_column && strcmp(gbe->alias.name, pkc->base.name) == 0) {
1344 2 : node *n;
1345 2 : for (n = ukil->h; n; n = n->next){
1346 2 : sql_idx* uki = n->data;
1347 2 : if (uki->columns->cnt == 1) {
1348 : /* for now only check simple case where unique key is a single column*/
1349 2 : sql_column* ukc = ((sql_kc *)uki->columns->h->data)->c;
1350 2 : if (strcmp(exp->alias.name, ukc->base.name) == 0) {
1351 : allow = true;
1352 : break;
1353 : }
1354 : }
1355 : }
1356 : }
1357 : }
1358 :
1359 2 : if (allow) {
1360 : /* sufficiency condition: abort if relation contains union subrelation
1361 : * because it may break functional dependency between pk and uk */
1362 2 : visitor v = {.sql=sql};
1363 2 : rel_visitor_topdown(&v, inner, &find_union);
1364 2 : if (v.data)
1365 1 : allow = false;
1366 : }
1367 : }
1368 :
1369 54 : return allow;
1370 :
1371 : }
1372 :
1373 : static sql_exp *
1374 2339912 : rel_column_ref(sql_query *query, sql_rel **rel, symbol *column_r, int f)
1375 : {
1376 2339912 : mvc *sql = query->sql;
1377 2339912 : sql_exp *exp = NULL;
1378 2339912 : dlist *l = NULL;
1379 2339912 : sql_rel *inner = rel?*rel:NULL, *outer = NULL;
1380 2339912 : int used_lower_after_processed = 0;
1381 :
1382 2339912 : assert((column_r->token == SQL_COLUMN || column_r->token == SQL_IDENT) && column_r->type == type_list);
1383 2339912 : l = column_r->data.lval;
1384 :
1385 2339912 : if (dlist_length(l) == 1) {
1386 1105609 : const char *name = l->h->data.sval;
1387 :
1388 1105609 : if (!exp && inner)
1389 1011260 : if (!(exp = rel_bind_column(sql, inner, name, f, 0)) && sql->session->status == -ERR_AMBIGUOUS)
1390 : return NULL;
1391 1105595 : if (!exp && inner && ((is_sql_aggr(f) && (is_groupby(inner->op) || is_select(inner->op))) ||
1392 23872 : (is_groupby(inner->op) && inner->flag))) {
1393 : /* if inner is selection, ie having clause, get the left relation to reach group by */
1394 : sql_rel *gp = inner;
1395 258 : while (gp && is_select(gp->op))
1396 27 : gp = gp->l;
1397 231 : if (gp && !is_basetable(gp->op) && gp->l && !(exp = rel_bind_column(sql, gp->l, name, f, 0)) && sql->session->status == -ERR_AMBIGUOUS)
1398 : return NULL;
1399 : }
1400 1105595 : if (!exp && query && query_has_outer(query)) {
1401 448 : int i;
1402 :
1403 501 : for (i=query_has_outer(query)-1; i>= 0 && !exp && (outer = query_fetch_outer(query,i)); i--) {
1404 472 : if (!(exp = rel_bind_column(sql, outer, name, f, 0)) && sql->session->status == -ERR_AMBIGUOUS)
1405 : return NULL;
1406 84 : if (!exp && is_groupby(outer->op)) {
1407 31 : if (!(exp = rel_bind_column(sql, outer->l, name, f, 0)) && sql->session->status == -ERR_AMBIGUOUS)
1408 : return NULL;
1409 : else
1410 31 : used_lower_after_processed = is_processed(outer);
1411 : }
1412 472 : if (exp && is_simple_project(outer->op) && !rel_find_exp(outer, exp))
1413 0 : exp = rel_project_add_exp(sql, outer, exp);
1414 419 : if (exp)
1415 : break;
1416 : }
1417 448 : if (exp && exp->card != CARD_AGGR && is_groupby(outer->op) && !is_sql_aggr(f) && rel_find_exp(outer->l, exp))
1418 5 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", name);
1419 443 : if (exp && outer && outer->card <= CARD_AGGR && exp->card > CARD_AGGR && !is_sql_aggr(f))
1420 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", name);
1421 443 : if (exp && outer && !is_sql_aggr(f) && !is_sql_aggr(query_fetch_outer_state(query, i))) {
1422 275 : if (used_lower_after_processed || query_outer_used_exp( query, i, exp, f)) {
1423 0 : sql_exp *lu = used_lower_after_processed?exp:query_outer_last_used(query, i);
1424 0 : if (exp_name(lu) && exp_relname(lu) && !has_label(lu))
1425 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column \"%s.%s\" from outer query", exp_relname(lu), exp_name(lu));
1426 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column from outer query");
1427 : }
1428 : }
1429 443 : if (exp) {
1430 414 : int of = query_fetch_outer_state(query, i);
1431 414 : if (is_groupby(outer->op) && !is_sql_aggr(f)) {
1432 37 : exp = rel_groupby_add_aggr(sql, outer, exp);
1433 37 : exp->card = CARD_ATOM;
1434 377 : } else if (is_groupby(outer->op) && is_sql_aggr(f) && exps_any_match(outer->exps, exp))
1435 57 : exp = exp_ref(sql, exp);
1436 : else
1437 320 : exp->card = CARD_ATOM;
1438 414 : set_freevar(exp, i);
1439 : /*
1440 : if (exp->alias.label == exp->nid)
1441 : exp->alias.label = -(sql->nid++);
1442 : */
1443 414 : if (!is_sql_where(of) && !is_sql_aggr(of) && !is_sql_aggr(f) && !outer->grouped)
1444 125 : set_outer(outer);
1445 : }
1446 443 : if (exp && outer && (is_select(outer->op) || is_join(outer->op)))
1447 31 : set_dependent_(outer);
1448 : }
1449 :
1450 : /* some views are just in the stack, like before and after updates views */
1451 1105590 : if (rel && sql->use_views) {
1452 13 : sql_rel *v = NULL;
1453 13 : int dup = stack_find_rel_view_projection_columns(sql, name, &v); /* trigger views are basetables relations, so those may conflict */
1454 :
1455 13 : if (dup < 0 || (v && exp && *rel && is_base(v->op) && v != *rel)) /* comparing pointers, ugh */
1456 2 : return sql_error(sql, ERR_AMBIGUOUS, SQLSTATE(42000) "SELECT: identifier '%s' ambiguous", name);
1457 11 : if (v && !exp) {
1458 4 : if (*rel)
1459 1 : *rel = rel_crossproduct(sql->sa, *rel, rel_dup(v), op_join);
1460 : else
1461 3 : *rel = rel_dup(v);
1462 4 : exp = rel_bind_column(sql, *rel, name, f, 0);
1463 : }
1464 : }
1465 1105588 : if (!exp) /* If no column was found, try a variable or parameter */
1466 117831 : exp = rel_exp_variable_on_scope(sql, NULL, name);
1467 :
1468 117831 : if (!exp) {
1469 908 : if (inner && !is_sql_aggr(f) && is_groupby(inner->op) && inner->l && (exp = rel_bind_column(sql, inner->l, name, f, 0)))
1470 46 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", name);
1471 : }
1472 :
1473 1104680 : if (!exp)
1474 862 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: identifier '%s' unknown", name);
1475 1104680 : if (exp && inner && inner->card <= CARD_AGGR && exp->card > CARD_AGGR && (is_sql_sel(f) || is_sql_having(f)) && (!is_sql_aggr(f) && !(inner->flag)))
1476 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", name);
1477 1104680 : if (exp && inner && is_groupby(inner->op) && !is_sql_aggr(f) && !is_freevar(exp) && !inner->flag)
1478 25019 : exp = rel_groupby_add_aggr(sql, inner, exp);
1479 1234303 : } else if (dlist_length(l) == 2 || dlist_length(l) == 3) {
1480 1234303 : const char *sname = NULL;
1481 1234303 : const char *tname = l->h->data.sval;
1482 1234303 : const char *cname = l->h->next->data.sval;
1483 1234303 : if (dlist_length(l) == 3) {
1484 1 : sname = l->h->data.sval;
1485 1 : tname = l->h->next->data.sval;
1486 1 : cname = l->h->next->next->data.sval;
1487 : }
1488 :
1489 1234303 : if (!exp && rel && inner)
1490 1234176 : if (!(exp = rel_bind_column3(sql, inner, sname, tname, cname, f)) && sql->session->status == -ERR_AMBIGUOUS)
1491 : return NULL;
1492 1234302 : if (!exp && inner && is_sql_aggr(f) && (is_groupby(inner->op) || is_select(inner->op))) {
1493 : /* if inner is selection, ie having clause, get the left relation to reach group by */
1494 : sql_rel *gp = inner;
1495 56 : while (gp && is_select(gp->op))
1496 4 : gp = gp->l;
1497 52 : if (gp && !is_basetable(gp->op) && gp->l && !(exp = rel_bind_column3(sql, gp->l, sname, tname, cname, f)) && sql->session->status == -ERR_AMBIGUOUS)
1498 : return NULL;
1499 : }
1500 1234302 : if (!exp && query && query_has_outer(query)) {
1501 11813 : int i;
1502 :
1503 12023 : for (i=query_has_outer(query)-1; i>= 0 && !exp && (outer = query_fetch_outer(query,i)); i--) {
1504 12022 : if (!(exp = rel_bind_column3(sql, outer, sname, tname, cname, f | sql_outer)) && sql->session->status == -ERR_AMBIGUOUS)
1505 : return NULL;
1506 293 : if (!exp && is_groupby(outer->op)) {
1507 102 : if (!(exp = rel_bind_column3(sql, outer->l, sname, tname, cname, f)) && sql->session->status == -ERR_AMBIGUOUS)
1508 : return NULL;
1509 : else
1510 102 : used_lower_after_processed = is_processed(outer);
1511 : }
1512 12022 : if (exp && is_simple_project(outer->op) && !rel_find_exp(outer, exp))
1513 0 : exp = rel_project_add_exp(sql, outer, exp);
1514 11812 : if (exp)
1515 : break;
1516 : }
1517 11813 : if (exp && exp->card != CARD_AGGR && is_groupby(outer->op) && !is_sql_aggr(f) && rel_find_exp(outer->l, exp))
1518 6 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", tname, cname);
1519 11807 : if (exp && outer && outer->card <= CARD_AGGR && exp->card > CARD_AGGR && !is_sql_aggr(f))
1520 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", tname, cname);
1521 11807 : if (exp && outer && !is_sql_aggr(f)) {
1522 11532 : if (used_lower_after_processed || query_outer_used_exp( query, i, exp, f)) {
1523 0 : sql_exp *lu = used_lower_after_processed?exp:query_outer_last_used(query, i);
1524 0 : if (exp_name(lu) && exp_relname(lu) && !has_label(lu))
1525 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column \"%s.%s\" from outer query", exp_relname(lu), exp_name(lu));
1526 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column from outer query");
1527 : }
1528 : }
1529 11807 : if (exp) {
1530 11806 : int of = query_fetch_outer_state(query, i);
1531 11806 : if (is_groupby(outer->op) && !is_sql_aggr(f)) {
1532 64 : exp = rel_groupby_add_aggr(sql, outer, exp);
1533 64 : exp->card = CARD_ATOM;
1534 11742 : } else if (is_groupby(outer->op) && is_sql_aggr(f) && exps_any_match(outer->exps, exp))
1535 52 : exp = exp_ref(sql, exp);
1536 : else
1537 11690 : exp->card = CARD_ATOM;
1538 11806 : set_freevar(exp, i);
1539 : /*
1540 : if (exp->alias.label == exp->nid)
1541 : exp->alias.label = -(sql->nid++);
1542 : */
1543 11806 : if (!is_sql_where(of) && !is_sql_aggr(of) && !is_sql_aggr(f) && !outer->grouped)
1544 10113 : set_outer(outer);
1545 : }
1546 11807 : if (exp && outer && (is_select(outer->op) || is_join(outer->op)))
1547 4695 : set_dependent_(outer);
1548 : }
1549 :
1550 : /* some views are just in the stack, like before and after updates views */
1551 1234296 : if (rel && sql->use_views) {
1552 40 : sql_rel *v = stack_find_rel_view(sql, tname);
1553 :
1554 40 : if (v && exp && *rel && is_base(v->op) && v != *rel) /* trigger views are basetables relations, so those may conflict */
1555 0 : return sql_error(sql, ERR_AMBIGUOUS, SQLSTATE(42000) "SELECT: identifier '%s.%s' ambiguous", tname, cname);
1556 40 : if (v && !exp) {
1557 20 : if (*rel)
1558 0 : *rel = rel_crossproduct(sql->sa, *rel, rel_dup(v), op_join);
1559 : else
1560 20 : *rel = rel_dup(v);
1561 20 : if (!(exp = rel_bind_column3(sql, *rel, sname, tname, cname, f)) && sql->session->status == -ERR_AMBIGUOUS)
1562 : return NULL;
1563 : }
1564 : }
1565 1234276 : if (!exp) { /* If no column was found, try a global variable */
1566 66270 : sql_var *var = NULL;
1567 66270 : sql_subtype *tpe = NULL;
1568 66270 : int level = 0;
1569 66270 : sql_arg *a = NULL;
1570 :
1571 66270 : if (find_variable_on_scope(sql, tname, cname, &var, &a, &tpe, &level, "SELECT")) { /* search schema with table name, ugh */
1572 10 : assert(level == 0);
1573 10 : exp = exp_param_or_declared(sql->sa, sa_strdup(sql->sa, var->sname), sa_strdup(sql->sa, var->name), &(var->var.tpe), 0);
1574 : }
1575 : }
1576 66270 : if (!exp) {
1577 66260 : if (inner && !is_sql_aggr(f) && is_groupby(inner->op) && inner->l && (exp = rel_bind_column3(sql, inner->l, sname, tname, cname, f))) {
1578 54 : if (group_by_pk_project_uk_cond(sql, inner, exp, sname, tname)) {
1579 : /* SQL23 feature: very special case where primary key is used in GROUP BY expression and
1580 : * unique key is in the project list or ORDER BY clause */
1581 1 : sql->session->status = 0;
1582 1 : sql->errstr[0] = 0;
1583 1 : exp->card = CARD_AGGR;
1584 1 : list_append(inner->exps, exp);
1585 : }
1586 : else
1587 53 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", tname, cname);
1588 : }
1589 : }
1590 :
1591 1 : if (!exp)
1592 66206 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42S22) "SELECT: no such column '%s.%s'", tname, cname);
1593 1168037 : if (exp && inner && inner->card <= CARD_AGGR && exp->card > CARD_AGGR && (is_sql_sel(f) || is_sql_having(f)) && !is_sql_aggr(f))
1594 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", tname, cname);
1595 1168037 : if (exp && inner && is_groupby(inner->op) && !is_sql_aggr(f) && !is_freevar(exp))
1596 5656 : exp = rel_groupby_add_aggr(sql, inner, exp);
1597 0 : } else if (dlist_length(l) > 3) {
1598 0 : return sql_error(sql, 02, SQLSTATE(42000) "cross-database references are not implemented");
1599 : }
1600 2272717 : if (exp && !exp_is_atom(exp) && rel && !outer) {
1601 2143570 : if (query->last_exp && query->last_rel == *rel && !is_sql_aggr(query->last_state) && is_sql_aggr(f)) {
1602 52 : if (!is_groupby(query->last_rel->op) || list_empty(query->last_rel->r) || !exps_find_exp(query->last_rel->r, query->last_exp)) {
1603 31 : if (exp_relname(query->last_exp) && exp_name(query->last_exp) && !has_label(query->last_exp))
1604 31 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", exp_relname(query->last_exp), exp_name(query->last_exp));
1605 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
1606 : }
1607 : }
1608 2143539 : query->prev = query->last_exp;
1609 2143539 : query->last_exp = exp;
1610 2143539 : query->last_state = f;
1611 2143539 : query->last_rel = *rel;
1612 : }
1613 : return exp;
1614 : }
1615 :
1616 : int
1617 977569 : rel_convert_types(mvc *sql, sql_rel *ll, sql_rel *rr, sql_exp **L, sql_exp **R, int scale_fixing, check_type tpe)
1618 : {
1619 977569 : sql_exp *ls = *L;
1620 977569 : sql_exp *rs = *R;
1621 977569 : sql_subtype *lt = exp_subtype(ls);
1622 977569 : sql_subtype *rt = exp_subtype(rs);
1623 :
1624 977569 : if (!rt && !lt) {
1625 2 : sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) on both sides of an expression");
1626 2 : return -1;
1627 : }
1628 977567 : if (rt && (!lt || !lt->type))
1629 7 : return rel_set_type_param(sql, rt, ll, ls, 0);
1630 977560 : if (lt && (!rt || !rt->type))
1631 648 : return rel_set_type_param(sql, lt, rr, rs, 0);
1632 :
1633 976912 : if (rt && lt) {
1634 976912 : sql_subtype *i = lt;
1635 976912 : sql_subtype *r = rt;
1636 :
1637 976912 : if (subtype_cmp(lt, rt) != 0 || (tpe == type_equal_no_any && (lt->type->localtype==0 || rt->type->localtype==0))) {
1638 268855 : sql_subtype super;
1639 :
1640 268855 : cmp_supertype(&super, r, i);
1641 268855 : if (scale_fixing) {
1642 : /* convert ls to super type */
1643 268855 : ls = exp_check_type(sql, &super, ll, ls, tpe);
1644 : /* convert rs to super type */
1645 268855 : rs = exp_check_type(sql, &super, rr, rs, tpe);
1646 : } else {
1647 : /* convert ls to super type */
1648 0 : super.scale = lt->scale;
1649 0 : ls = exp_check_type(sql, &super, ll, ls, tpe);
1650 : /* convert rs to super type */
1651 0 : super.scale = rt->scale;
1652 0 : rs = exp_check_type(sql, &super, rr, rs, tpe);
1653 : }
1654 : }
1655 976912 : *L = ls;
1656 976912 : *R = rs;
1657 976912 : if (!ls || !rs)
1658 : return -1;
1659 : return 0;
1660 : }
1661 : return -1;
1662 : }
1663 :
1664 : static sql_rel *
1665 108848 : push_select_exp(mvc *sql, sql_rel *rel, sql_exp *e, sql_exp *ls, int f)
1666 : {
1667 108848 : if (is_outerjoin(rel->op)) {
1668 1178 : if ((is_left(rel->op) || is_full(rel->op)) && rel_find_exp(rel->l, ls)) {
1669 38 : rel_join_add_exp(sql->sa, rel, e);
1670 38 : return rel;
1671 1140 : } else if ((is_right(rel->op) || is_full(rel->op)) && rel_find_exp(rel->r, ls)) {
1672 5 : rel_join_add_exp(sql->sa, rel, e);
1673 5 : return rel;
1674 : }
1675 1135 : if (is_left(rel->op) && rel_find_exp(rel->r, ls)) {
1676 1109 : rel->r = rel_push_select(sql, rel->r, ls, e, f);
1677 1109 : return rel;
1678 26 : } else if (is_right(rel->op) && rel_find_exp(rel->l, ls)) {
1679 11 : rel->l = rel_push_select(sql, rel->l, ls, e, f);
1680 11 : return rel;
1681 : }
1682 : }
1683 : /* push select into the given relation */
1684 107685 : return rel_push_select(sql, rel, ls, e, f);
1685 : }
1686 :
1687 : static sql_rel *
1688 205007 : push_join_exp(mvc *sql, sql_rel *rel, sql_exp *e, sql_exp *L, sql_exp *R, sql_exp *R2, int f)
1689 : {
1690 205007 : sql_rel *r;
1691 205007 : if (/*is_semi(rel->op) ||*/ (is_outerjoin(rel->op) && !is_processed((rel)))) {
1692 22022 : rel_join_add_exp(sql->sa, rel, e);
1693 22022 : return rel;
1694 : }
1695 : /* push join into the given relation */
1696 182985 : if ((r = rel_push_join(sql, rel, L, R, R2, e, f)) != NULL)
1697 : return r;
1698 0 : rel_join_add_exp(sql->sa, rel, e);
1699 0 : return rel;
1700 : }
1701 :
1702 : static sql_rel *
1703 3390 : rel_select_push_filter_exp_down(mvc *sql, sql_rel *rel, sql_exp *e, list *l, list *r, int ff)
1704 : {
1705 3390 : sql_exp *ll;
1706 3390 : if (exps_card(r) <= CARD_ATOM && (exps_are_atoms(r) || exps_have_freevar(sql, r) || exps_have_freevar(sql, l))) {
1707 3293 : if (exps_card(l) == exps_card(r) || rel->processed) /* bin compare op */
1708 98 : return rel_select(sql->sa, rel, e);
1709 3195 : if ((ll = exps_find_one_multi_exp(l)))
1710 3195 : return push_select_exp(sql, rel, e, ll, ff);
1711 : }
1712 97 : if (is_outerjoin(rel->op))
1713 8 : return rel_select(sql->sa, rel, e);
1714 89 : return rel_select_add_exp(sql->sa, rel, e);
1715 : }
1716 :
1717 : static sql_rel *
1718 3388 : rel_filter(mvc *sql, sql_rel *rel, list *l, list *r, char *sname, char *filter_op, int anti, int ff)
1719 : {
1720 3388 : node *n;
1721 3388 : sql_exp *e = NULL;
1722 3388 : sql_subfunc *f = NULL;
1723 3388 : list *tl = sa_list(sql->sa);
1724 3388 : bool found = false;
1725 :
1726 6776 : for (n = l->h; n; n = n->next){
1727 3388 : sql_exp *e = n->data;
1728 :
1729 3388 : list_append(tl, exp_subtype(e));
1730 : }
1731 13475 : for (n = r->h; n; n = n->next){
1732 10087 : sql_exp *e = n->data;
1733 :
1734 10087 : list_append(tl, exp_subtype(e));
1735 : }
1736 : /* find filter function */
1737 3388 : f = bind_func_(sql, sname, filter_op, tl, F_FILT, false, &found, false);
1738 3388 : if (f) {
1739 3386 : node *n,*m = f->func->ops->h;
1740 3386 : list *nexps = sa_list(sql->sa);
1741 :
1742 6772 : for(n=l->h; m && n; m = m->next, n = n->next) {
1743 3386 : sql_arg *a = m->data;
1744 3386 : sql_exp *e = n->data;
1745 :
1746 3386 : e = exp_check_type(sql, &a->type, rel, e, type_equal);
1747 3386 : if (!e)
1748 : return NULL;
1749 3386 : list_append(nexps, e);
1750 : }
1751 3386 : l = nexps;
1752 3386 : nexps = sa_list(sql->sa);
1753 13465 : for(n=r->h; m && n; m = m->next, n = n->next) {
1754 10079 : sql_arg *a = m->data;
1755 10079 : sql_exp *e = n->data;
1756 :
1757 10079 : e = exp_check_type(sql, &a->type, rel, e, type_equal);
1758 10079 : if (!e)
1759 : return NULL;
1760 10079 : list_append(nexps, e);
1761 : }
1762 : r = nexps;
1763 : }
1764 3388 : if (!f)
1765 4 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: %s FILTER function %s%s%s'%s'",
1766 2 : found ? "insufficient privileges for" : "no such", sname ? "'":"", sname ? sname : "", sname ? "'.":"", filter_op);
1767 3386 : e = exp_filter(sql->sa, l, r, f, anti);
1768 :
1769 3386 : if (exps_one_is_rel(l) || exps_one_is_rel(r)) /* uncorrelated subquery case */
1770 9 : return rel_select(sql->sa, rel, e);
1771 : /* atom or row => select */
1772 6754 : for (node *n=l->h; n; n = n->next) {
1773 3377 : sql_exp *ls = n->data;
1774 :
1775 3377 : if (ls->card > rel->card) {
1776 0 : if (exp_name(ls) && !has_label(ls))
1777 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", exp_name(ls));
1778 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
1779 : }
1780 : }
1781 13429 : for (node *n=r->h; n; n = n->next) {
1782 10052 : sql_exp *rs = n->data;
1783 :
1784 10052 : if (rs->card > rel->card) {
1785 0 : if (exp_name(rs) && !has_label(rs))
1786 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", exp_name(rs));
1787 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
1788 : }
1789 : }
1790 3377 : return rel_select_push_filter_exp_down(sql, rel, e, l, r, ff);
1791 : }
1792 :
1793 : static sql_rel *
1794 3328 : rel_filter_exp_(mvc *sql, sql_rel *rel, sql_exp *ls, sql_exp *r1, sql_exp *r2, sql_exp *r3, char *filter_op, int anti, int f)
1795 : {
1796 3328 : list *l = sa_list(sql->sa);
1797 3328 : list *r = sa_list(sql->sa);
1798 :
1799 3328 : list_append(l, ls);
1800 3328 : list_append(r, r1);
1801 3328 : if (r2)
1802 3328 : list_append(r, r2);
1803 3328 : if (r3)
1804 3328 : list_append(r, r3);
1805 3328 : return rel_filter(sql, rel, l, r, "sys", filter_op, anti, f);
1806 : }
1807 :
1808 : static sql_rel *
1809 379055 : rel_select_push_compare_exp_down(mvc *sql, sql_rel *rel, sql_exp *e, sql_exp *ls, sql_exp *rs, sql_exp *rs2, int f)
1810 : {
1811 379055 : if (!is_join(rel->op) && !is_select(rel->op))
1812 86010 : return rel_select(sql->sa, rel, e);
1813 381619 : if ((rs->card <= CARD_ATOM || (rs2 && ls->card <= CARD_ATOM)) &&
1814 177148 : (exp_is_atom(rs) || (rs2 && exp_is_atom(ls)) || exp_has_freevar(sql, rs) || exp_has_freevar(sql, ls)) &&
1815 485 : (!rs2 || (rs2->card <= CARD_ATOM && (exp_is_atom(rs2) || exp_has_freevar(sql, rs2))))) {
1816 88038 : if (ls->card == rs->card || (rs2 && (ls->card == rs2->card || rs->card == rs2->card)) || rel->processed) /* bin compare op */
1817 994 : return rel_select(sql->sa, rel, e);
1818 :
1819 87044 : return push_select_exp(sql, rel, e, ls, f);
1820 : } else { /* join */
1821 205007 : return push_join_exp(sql, rel, e, ls, rs, rs2, f);
1822 : }
1823 : return rel;
1824 : }
1825 :
1826 : static sql_rel *
1827 352397 : rel_compare_exp_(sql_query *query, sql_rel *rel, sql_exp *ls, sql_exp *rs, sql_exp *rs2, int type, int anti, int quantifier, int f, int symmetric, int is_semantics)
1828 : {
1829 352397 : mvc *sql = query->sql;
1830 352397 : sql_exp *e = NULL;
1831 :
1832 352397 : if (quantifier || exp_is_rel(ls) || exp_is_rel(rs) || (rs2 && exp_is_rel(rs2))) {
1833 3314 : if (rs2) {
1834 7 : e = exp_compare2(sql->sa, ls, rs, rs2, type, symmetric);
1835 7 : if (anti)
1836 0 : set_anti(e);
1837 : } else {
1838 3307 : assert(!symmetric);
1839 3307 : if (rel_convert_types(sql, rel, rel, &ls, &rs, 1, type_equal_no_any) < 0)
1840 : return NULL;
1841 3307 : e = exp_compare_func(sql, ls, rs, compare_func((comp_type)type, anti), quantifier);
1842 : }
1843 3314 : return rel_select(sql->sa, rel, e);
1844 349083 : } else if (!rs2) {
1845 346136 : assert(!symmetric);
1846 346136 : if (ls->card < rs->card) {
1847 12636 : sql_exp *swap = ls;
1848 12636 : ls = rs;
1849 12636 : rs = swap;
1850 12636 : type = (int)swap_compare((comp_type)type);
1851 : }
1852 346136 : if (rel_convert_types(sql, rel, rel, &ls, &rs, 1, type_equal_no_any) < 0)
1853 : return NULL;
1854 346133 : e = exp_compare(sql->sa, ls, rs, type);
1855 346133 : if (is_semantics) set_semantics(e);
1856 : } else {
1857 2947 : assert(rs2);
1858 2947 : if (rel_convert_types(sql, rel, rel, &ls, &rs, 1, type_equal_no_any) < 0)
1859 : return NULL;
1860 2947 : if (!(rs2 = exp_check_type(sql, exp_subtype(ls), rel, rs2, type_equal)))
1861 : return NULL;
1862 2947 : e = exp_compare2(sql->sa, ls, rs, rs2, type, symmetric);
1863 : }
1864 349080 : if (anti)
1865 847 : set_anti(e);
1866 :
1867 349080 : if (!rel)
1868 0 : return rel_select(sql->sa, rel_project_exp(sql, exp_atom_bool(sql->sa, 1)), e);
1869 :
1870 : /* atom or row => select */
1871 349080 : if (ls->card > rel->card || rs->card > rel->card || (rs2 && rs2->card > rel->card)) {
1872 0 : sql_exp *e = ls->card > rel->card ? ls : rs->card > rel->card ? rs : rs2;
1873 0 : if (exp_name(e) && !has_label(e))
1874 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", exp_name(e));
1875 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
1876 : }
1877 349080 : return rel_select_push_compare_exp_down(sql, rel, e, ls, rs, rs2, f);
1878 : }
1879 :
1880 : static sql_rel *
1881 349443 : rel_compare_exp(sql_query *query, sql_rel *rel, sql_exp *ls, sql_exp *rs, char *compare_op, int reduce, int quantifier, int need_not, int f, int is_semantics)
1882 : {
1883 349443 : mvc *sql = query->sql;
1884 349443 : comp_type type = cmp_equal;
1885 :
1886 349443 : if (!ls || !rs)
1887 : return NULL;
1888 :
1889 349443 : if (!quantifier && ((!rel && !query_has_outer(query)) || !reduce)) {
1890 : /* TODO to handle filters here */
1891 0 : sql_exp *e;
1892 :
1893 0 : if (rel_convert_types(sql, rel, rel, &ls, &rs, 1, type_equal_no_any) < 0)
1894 : return NULL;
1895 0 : e = rel_binop_(sql, rel, ls, rs, "sys", compare_op, card_value, true);
1896 :
1897 0 : if (!e)
1898 : return NULL;
1899 0 : if (!reduce) {
1900 0 : if (rel->op == op_project) {
1901 0 : append(rel->exps, e);
1902 : } else {
1903 0 : list *exps = new_exp_list(sql->sa);
1904 :
1905 0 : append(exps, e);
1906 0 : return rel_project(sql->sa, rel, exps);
1907 : }
1908 : } else {
1909 0 : return rel_select(sql->sa, rel, e);
1910 : }
1911 : }
1912 349443 : type = compare_str2type(compare_op);
1913 349443 : assert(type != cmp_filter);
1914 349443 : return rel_compare_exp_(query, rel, ls, rs, NULL, type, need_not, quantifier, f, 0, is_semantics);
1915 : }
1916 :
1917 : static sql_rel *
1918 349423 : rel_compare(sql_query *query, sql_rel *rel, symbol *sc, symbol *lo, symbol *ro, char *compare_op, int f, exp_kind k, int quantifier, int is_semantics)
1919 : {
1920 349423 : mvc *sql = query->sql;
1921 349423 : sql_exp *rs = NULL, *ls;
1922 349423 : comp_type cmp_type = compare_str2type(compare_op);
1923 349423 : exp_kind ek = {type_value, card_column, FALSE};
1924 349423 : int need_not = 0;
1925 :
1926 349423 : if ((quantifier == 1 && cmp_type == cmp_equal) ||
1927 349388 : (quantifier == 2 && cmp_type == cmp_notequal)) {
1928 63 : dnode *n = sc->data.lval->h;
1929 63 : dlist *dl = dlist_create(sql->sa);
1930 : /* map into IN/NOT IN */
1931 63 : sc->token = cmp_type==cmp_equal?SQL_IN:SQL_NOT_IN;
1932 63 : n->next->type = type_list;
1933 63 : n->next->data.lval = dl;
1934 63 : n->next->next->next = NULL; /* remove quantifier */
1935 63 : dl->h = n->next->next;
1936 63 : n->next->next = NULL; /* (remove comparison) moved righthand side */
1937 63 : return rel_logical_exp(query, rel, sc, f);
1938 : }
1939 : /* <> ANY -> NOT (= ALL) */
1940 349360 : if (quantifier == 1 && cmp_type == cmp_notequal) {
1941 5 : need_not = 1;
1942 5 : quantifier = 2;
1943 5 : cmp_type = cmp_equal;
1944 5 : compare_op = "=";
1945 : }
1946 :
1947 349360 : if ((lo->token == SQL_SELECT || lo->token == SQL_UNION || lo->token == SQL_EXCEPT || lo->token == SQL_INTERSECT || lo->token == SQL_VALUES) &&
1948 43 : (ro->token != SQL_SELECT && ro->token != SQL_UNION && ro->token != SQL_EXCEPT && ro->token != SQL_INTERSECT && ro->token != SQL_VALUES)) {
1949 30 : symbol *tmp = lo; /* swap subquery to the right hand side */
1950 :
1951 30 : lo = ro;
1952 30 : ro = tmp;
1953 :
1954 30 : if (compare_op[0] == '>')
1955 16 : compare_op[0] = '<';
1956 14 : else if (compare_op[0] == '<' && compare_op[1] != '>')
1957 1 : compare_op[0] = '>';
1958 30 : cmp_type = swap_compare(cmp_type);
1959 : }
1960 :
1961 349360 : ls = rel_value_exp(query, &rel, lo, f|sql_farg, ek);
1962 349360 : if (!ls)
1963 : return NULL;
1964 349311 : if (ls && rel && exp_has_freevar(sql, ls) && is_sql_sel(f))
1965 0 : ls = rel_project_add_exp(sql, rel, ls);
1966 349311 : if (quantifier)
1967 58 : ek.card = card_set;
1968 :
1969 349311 : rs = rel_value_exp(query, &rel, ro, f|sql_farg, ek);
1970 349311 : if (!rs)
1971 : return NULL;
1972 349283 : if (ls->card > rs->card && rs->card == CARD_AGGR && is_sql_having(f)) {
1973 0 : if (exp_name(ls) && exp_relname(ls) && !has_label(ls))
1974 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", exp_relname(ls), exp_name(ls));
1975 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
1976 : }
1977 349283 : if (rs->card > ls->card && ls->card == CARD_AGGR && is_sql_having(f)) {
1978 0 : if (exp_name(rs) && exp_relname(rs) && !has_label(rs))
1979 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", exp_relname(rs), exp_name(rs));
1980 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
1981 : }
1982 349283 : return rel_compare_exp(query, rel, ls, rs, compare_op, k.reduce, quantifier, need_not, f, is_semantics);
1983 : }
1984 :
1985 : static sql_exp*
1986 78859 : _rel_nop(mvc *sql, char *sname, char *fname, list *tl, sql_rel *rel, list *exps, exp_kind ek)
1987 : {
1988 78859 : bool found = false;
1989 78859 : int table_func = (ek.card == card_relation);
1990 78859 : sql_ftype type = (ek.card == card_loader)?F_LOADER:((ek.card == card_none)?F_PROC:
1991 : ((ek.card == card_relation)?F_UNION:F_FUNC));
1992 :
1993 78859 : sql_subfunc *f = bind_func_(sql, sname, fname, tl, type, false, &found, false);
1994 78859 : if (f && !(exps = check_arguments_and_find_largest_any_type(sql, rel, exps, f, table_func, false)))
1995 : f = NULL;
1996 :
1997 78843 : if (f)
1998 78843 : return exp_op(sql->sa, exps, f);
1999 16 : char *arg_list = nary_function_arg_types_2str(sql, tl, list_length(tl));
2000 32 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: %s operator %s%s%s'%s'(%s)",
2001 16 : found ? "insufficient privileges for" : "no such", sname ? "'":"", sname ? sname : "", sname ? "'.":"", fname, arg_list ? arg_list : "");
2002 : }
2003 :
2004 : static sql_exp *
2005 2057 : exp_exist(sql_query *query, sql_rel *rel, sql_exp *le, int exists)
2006 : {
2007 2057 : mvc *sql = query->sql;
2008 2057 : sql_subfunc *exists_func = NULL;
2009 2057 : sql_subtype *t;
2010 2057 : sql_exp *res;
2011 :
2012 2057 : if (!exp_name(le))
2013 753 : exp_label(sql->sa, le, ++sql->label);
2014 2057 : if (exp_is_rel(le)) { /* for the subquery case, propagate to the inner query */
2015 2057 : sql_rel *r = exp_rel_get_rel(sql->sa, le);
2016 2057 : if (is_project(r->op) && !list_empty(r->exps)) {
2017 5898 : for (node *n = r->exps->h; n; n = n->next)
2018 3841 : if (!exp_subtype(n->data) && rel_set_type_param(sql, sql_bind_localtype("bit"), r, n->data, 0) < 0) /* workaround */
2019 : return NULL;
2020 2057 : le->tpe = *exp_subtype(r->exps->h->data); /* just take the first expression type */
2021 : }
2022 0 : } else if (!exp_subtype(le) && rel_set_type_param(sql, sql_bind_localtype("bit"), rel, le, 0) < 0) /* workaround */
2023 : return NULL;
2024 2057 : t = exp_subtype(le);
2025 :
2026 2118 : if (!(exists_func = sql_bind_func(sql, "sys", exists ? "sql_exists" : "sql_not_exists", t, NULL, F_FUNC, true, true)))
2027 0 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "exist operator on type %s missing", t ? t->type->base.name : "unknown");
2028 2057 : res = exp_unop(sql->sa, le, exists_func);
2029 2057 : set_has_no_nil(res);
2030 2057 : return res;
2031 : }
2032 :
2033 : static sql_exp *
2034 1073 : rel_exists_value_exp(sql_query *query, sql_rel **rel, symbol *sc, int f)
2035 : {
2036 1073 : exp_kind ek = {type_value, card_exists, FALSE};
2037 1073 : sql_exp *le, *e;
2038 :
2039 1073 : le = rel_value_exp(query, rel, sc->data.sym, f|sql_farg, ek);
2040 1073 : if (!le)
2041 : return NULL;
2042 1072 : if (!(e = exp_exist(query, rel ? *rel : NULL, le, sc->token == SQL_EXISTS)))
2043 : return NULL;
2044 : /* only freevar should have CARD_AGGR */
2045 1072 : e->card = CARD_ATOM;
2046 1072 : return e;
2047 : }
2048 :
2049 : static sql_rel *
2050 991 : rel_exists_exp(sql_query *query, sql_rel *rel, symbol *sc, int f)
2051 : {
2052 991 : exp_kind ek = {type_value, card_exists, TRUE};
2053 991 : mvc *sql = query->sql;
2054 991 : sql_rel *sq = NULL;
2055 :
2056 991 : if (is_psm_call(f) || is_sql_merge(f))
2057 3 : return sql_error(sql, 02, SQLSTATE(42000) "%s: subqueries not supported inside %s", is_psm_call(f) ? "CALL" : "MERGE", is_psm_call(f) ? "CALL statements" : "MERGE conditions");
2058 990 : if (rel) {
2059 990 : query_processed(query);
2060 990 : query_push_outer(query, rel, f);
2061 : }
2062 990 : sq = rel_subquery(query, sc->data.sym, ek);
2063 990 : if (rel)
2064 990 : rel = query_pop_outer(query);
2065 990 : assert(!is_sql_sel(f));
2066 990 : if (sq) {
2067 985 : sql_exp *e = exp_rel(sql, sq);
2068 985 : if (!(e = exp_exist(query, rel, e, sc->token == SQL_EXISTS)))
2069 : return NULL;
2070 : /* only freevar should have CARD_AGGR */
2071 985 : e->card = CARD_ATOM;
2072 985 : rel = rel_select_add_exp(sql->sa, rel, e);
2073 985 : return rel;
2074 : }
2075 : return NULL;
2076 : }
2077 :
2078 : static int
2079 7029 : is_project_true(sql_rel *r)
2080 : {
2081 7029 : if (r && !r->l && list_length(r->exps) == 1) {
2082 82 : sql_exp *e = r->exps->h->data;
2083 82 : if (exp_is_atom(e) && exp_is_true(e))
2084 : return 1;
2085 : }
2086 : return 0;
2087 : }
2088 :
2089 : static sql_exp *
2090 62330 : rel_in_value_exp(sql_query *query, sql_rel **rel, symbol *sc, int f)
2091 : {
2092 62330 : mvc *sql = query->sql;
2093 62330 : exp_kind ek = {type_value, card_column, TRUE};
2094 62330 : dlist *dl = sc->data.lval;
2095 62330 : symbol *lo = NULL;
2096 62330 : dnode *n = dl->h->next, *dn = NULL;
2097 62330 : sql_exp *le = NULL, *re, *e = NULL;
2098 62330 : list *ll = sa_list(sql->sa);
2099 62330 : int is_tuple = 0, add_select = 0;
2100 :
2101 : /* complex case */
2102 62330 : if (dl->h->type == type_list) { /* (a,b..) in (.. ) */
2103 4117 : dn = dl->h->data.lval->h;
2104 4117 : lo = dn->data.sym;
2105 4117 : dn = dn->next;
2106 : } else {
2107 58213 : lo = dl->h->data.sym;
2108 : }
2109 197314 : for( ; lo; lo = dn?dn->data.sym:NULL, dn = dn?dn->next:NULL ) {
2110 67496 : le = rel_value_exp(query, rel, lo, f|sql_farg, ek);
2111 67496 : if (!le)
2112 : return NULL;
2113 67492 : append(ll, le);
2114 : }
2115 62326 : if (list_length(ll) == 1) {
2116 58209 : le = ll->h->data;
2117 58209 : ek.card = card_set;
2118 : } else {
2119 4117 : le = exp_values(sql->sa, ll);
2120 4117 : exp_label(sql->sa, le, ++sql->label);
2121 4117 : ek.type = list_length(ll);
2122 4117 : is_tuple = list_length(ll);
2123 : }
2124 : /* list of values or subqueries */
2125 : /* 3 right hand side cases,
2126 : * 1 - value/tuple list of atoms
2127 : * 2 - list of scalar sub queries (needs check on 1 row/column per query)
2128 : * 3 - single tabular ie. multi column, multi row query
2129 : */
2130 62326 : if (n->type == type_list) {
2131 62326 : sql_exp *values;
2132 62326 : list *vals = sa_list(sql->sa);
2133 :
2134 62326 : n = dl->h->next;
2135 62326 : n = n->data.lval->h;
2136 :
2137 309117 : for (; n; n = n->next) {
2138 246823 : if (n->type == type_list) {
2139 3 : dnode *m = n->data.lval->h;
2140 3 : list *rl = sa_list(sql->sa);
2141 12 : for (; m; m = m->next) {
2142 6 : assert(m->type == type_symbol);
2143 6 : sql_exp *re = rel_value_exp(query, rel, m->data.sym, f|sql_farg, ek);
2144 6 : if (!re)
2145 : return NULL;
2146 6 : append(rl, re);
2147 : }
2148 3 : re = exp_values(sql->sa, rl);
2149 : } else {
2150 246820 : assert(n->type == type_symbol);
2151 246820 : re = rel_value_exp(query, rel, n->data.sym, f|sql_farg, ek);
2152 : }
2153 246823 : if (!re)
2154 : return NULL;
2155 246800 : if (is_tuple && (!exp_is_rel(re) && !is_values(re)))
2156 0 : return sql_error(sql, 02, SQLSTATE(42000) "Cannot match a tuple to a single value");
2157 8226 : if (is_tuple && exp_is_rel(re)) {
2158 4116 : sql_rel *r = exp_rel_get_rel(sql->sa, re);
2159 :
2160 4116 : if (!r)
2161 0 : return sql_error(sql, 02, SQLSTATE(42000) "Subquery missing");
2162 4116 : if (r->nrcols != ek.type)
2163 12 : return sql_error(sql, 02, SQLSTATE(42000) "Subquery has too %s columns", (r->nrcols < ek.type) ? "few" : "many");
2164 4107 : re = exp_rel_label(sql, re);
2165 242684 : } else if (exp_is_rel(re)) {
2166 7030 : sql_rel *r = exp_rel_get_rel(sql->sa, re);
2167 7030 : add_select = 1;
2168 7030 : if (rel && *rel && is_join((*rel)->op))
2169 2946 : set_dependent((*rel));
2170 7030 : if (is_project(r->op) && is_project_true(r->l) && list_length(r->exps) == 1)
2171 80 : re = r->exps->h->data;
2172 235654 : } else if (is_values(re) && is_tuple != list_length(exp_get_values(re))) {
2173 0 : return sql_error(sql, 02, SQLSTATE(42000) "Tuple sizes do not match");
2174 : }
2175 246791 : append(vals, re);
2176 : }
2177 :
2178 62294 : if (list_empty(vals))
2179 0 : return sql_error(sql, 02, SQLSTATE(42000) "The list of values for IN operator cannot be empty");
2180 :
2181 62294 : values = exp_values(sql->sa, vals);
2182 62294 : exp_label(sql->sa, values, ++sql->label);
2183 62294 : if (is_tuple) {
2184 4108 : if (!(values = exp_tuples_set_supertype(sql, exp_get_values(le), values)))
2185 : return NULL;
2186 4108 : if (!(le->f = tuples_check_types(sql, exp_get_values(le), values)))
2187 : return NULL;
2188 : } else { /* if it's not a tuple, enforce coercion on the type for every element on the list */
2189 58186 : sql_subtype super, *le_tpe = exp_subtype(le), *values_tpe = NULL;
2190 :
2191 300866 : for (node *m = vals->h; m; m = m->next) { /* first get values supertype */
2192 242680 : sql_exp *e = m->data;
2193 242680 : sql_subtype *tpe = exp_subtype(e);
2194 :
2195 242680 : if (values_tpe && tpe) {
2196 184491 : cmp_supertype(&super, values_tpe, tpe);
2197 184491 : *values_tpe = super;
2198 58189 : } else if (!values_tpe && tpe) {
2199 58182 : super = *tpe;
2200 58182 : values_tpe = &super;
2201 : }
2202 : }
2203 58186 : if (!le_tpe)
2204 2 : le_tpe = values_tpe;
2205 58186 : if (!values_tpe)
2206 4 : values_tpe = le_tpe;
2207 58186 : if (!le_tpe || !values_tpe)
2208 1 : return sql_error(sql, 01, SQLSTATE(42000) "For the IN operator, both sides must have a type defined");
2209 58185 : cmp_supertype(&super, values_tpe, le_tpe); /* compute supertype */
2210 :
2211 : /* on selection/join cases we can generate cmp expressions instead of anyequal for trivial cases */
2212 58185 : if ((is_sql_where(f) || is_sql_having(f)) && !is_sql_farg(f) && !exp_has_rel(le) && exps_are_atoms(vals)) {
2213 24023 : if (list_length(vals) == 1) { /* use cmp_equal instead of cmp_in for 1 expression */
2214 115 : sql_exp *first = vals->h->data;
2215 115 : if (rel_convert_types(sql, rel ? *rel : NULL, rel ? *rel : NULL, &le, &first, 1, type_equal_no_any) < 0)
2216 0 : return NULL;
2217 140 : e = exp_compare(sql->sa, le, first, (sc->token == SQL_IN) ? cmp_equal : cmp_notequal);
2218 : } else { /* use cmp_in instead of anyequal for n simple expressions */
2219 120838 : for (node *n = vals->h ; n ; n = n->next)
2220 96930 : if ((n->data = exp_check_type(sql, &super, rel ? *rel : NULL, n->data, type_equal)) == NULL)
2221 : return NULL;
2222 23908 : if ((le = exp_check_type(sql, &super, rel ? *rel : NULL, le, type_equal)) == NULL)
2223 : return NULL;
2224 32524 : e = exp_in(sql->sa, le, vals, (sc->token == SQL_IN) ? cmp_in : cmp_notin);
2225 : }
2226 : }
2227 24023 : if (!e) { /* after computing supertype, check types for each IN value */
2228 179796 : for (node *n = vals->h ; n ; n = n->next)
2229 145634 : if ((n->data = exp_check_type(sql, &super, rel ? *rel : NULL, n->data, type_equal)) == NULL)
2230 : return NULL;
2231 34162 : values->tpe = *exp_subtype(vals->h->data);
2232 34162 : if (!(le = exp_check_type(sql, &super, rel ? *rel : NULL, le, type_equal)))
2233 : return NULL;
2234 : }
2235 : }
2236 58185 : if (!e) {
2237 38270 : if (add_select && rel && *rel && !is_project((*rel)->op) && !is_select((*rel)->op) && !is_base((*rel)->op))
2238 2945 : *rel = rel_select(sql->sa, *rel, NULL);
2239 38270 : if ((rel && *rel) || exp_has_rel(le) || exp_has_rel(values))
2240 32708 : e = exp_in_func(sql, le, values, (sc->token == SQL_IN), is_tuple);
2241 : else
2242 5562 : e = exp_in_aggr(sql, le, values, (sc->token == SQL_IN), is_tuple);
2243 : }
2244 : }
2245 : return e;
2246 : }
2247 :
2248 : static sql_rel *
2249 32615 : rel_in_exp(sql_query *query, sql_rel *rel, symbol *sc, int f)
2250 : {
2251 32615 : mvc *sql = query->sql;
2252 32615 : sql_exp *e = rel_in_value_exp(query, &rel, sc, f);
2253 :
2254 32615 : assert(!is_sql_sel(f));
2255 32615 : if (!e || !rel)
2256 : return NULL;
2257 :
2258 32591 : if (e->type == e_cmp) { /* it's a exp_in or cmp_equal of simple expressions, push down early on if possible */
2259 24021 : sql_exp *ls = e->l;
2260 24021 : bool rlist = (e->flag == cmp_in || e->flag == cmp_notin);
2261 24021 : unsigned int rcard = rlist ? exps_card(e->r) : exp_card(e->r);
2262 24021 : int r_is_atoms = rlist ? exps_are_atoms(e->r) : exp_is_atom(e->r);
2263 24021 : int r_has_freevar = rlist ? exps_have_freevar(sql, e->r) : exp_has_freevar(sql, e->r);
2264 :
2265 24021 : if (rcard <= CARD_ATOM && (r_is_atoms || r_has_freevar || exp_has_freevar(sql, ls))) {
2266 24021 : if ((exp_card(ls) == rcard) || rel->processed) /* bin compare op */
2267 5412 : return rel_select(sql->sa, rel, e);
2268 :
2269 18609 : return push_select_exp(sql, rel, e, ls, f);
2270 : } else { /* join */
2271 0 : sql_exp *rs = rlist ? exps_find_one_multi_exp(e->r) : e->r;
2272 0 : if (rs)
2273 0 : return push_join_exp(sql, rel, e, ls, rs, NULL, f);
2274 : }
2275 : }
2276 8570 : if (is_outerjoin(rel->op))
2277 13 : return rel_select(sql->sa, rel, e);
2278 8557 : return rel_select_add_exp(sql->sa, rel, e);
2279 : }
2280 :
2281 : static bool
2282 52633 : not_symbol_can_be_propagated(mvc *sql, symbol *sc)
2283 : {
2284 52633 : switch (sc->token) {
2285 : case SQL_IN:
2286 : case SQL_NOT_IN:
2287 : case SQL_EXISTS:
2288 : case SQL_NOT_EXISTS:
2289 : case SQL_LIKE:
2290 : case SQL_NOT_LIKE:
2291 : case SQL_BETWEEN:
2292 : case SQL_NOT_BETWEEN:
2293 : case SQL_IS_NULL:
2294 : case SQL_IS_NOT_NULL:
2295 : case SQL_NOT:
2296 : case SQL_COMPARE:
2297 : return true;
2298 6822 : case SQL_AND:
2299 : case SQL_OR: {
2300 6822 : symbol *lo = sc->data.lval->h->data.sym;
2301 6822 : symbol *ro = sc->data.lval->h->next->data.sym;
2302 6826 : return not_symbol_can_be_propagated(sql, lo) && not_symbol_can_be_propagated(sql, ro);
2303 : }
2304 36563 : default:
2305 36563 : return false;
2306 : }
2307 : }
2308 :
2309 : /* Warning, this function assumes the entire bison tree can be negated, so call it after 'not_symbol_can_be_propagated' */
2310 : static symbol *
2311 16065 : negate_symbol_tree(mvc *sql, symbol *sc)
2312 : {
2313 16065 : switch (sc->token) {
2314 1454 : case SQL_IN:
2315 1454 : sc->token = SQL_NOT_IN;
2316 1454 : break;
2317 22 : case SQL_NOT_IN:
2318 22 : sc->token = SQL_IN;
2319 22 : break;
2320 0 : case SQL_EXISTS:
2321 0 : sc->token = SQL_NOT_EXISTS;
2322 0 : break;
2323 0 : case SQL_NOT_EXISTS:
2324 0 : sc->token = SQL_EXISTS;
2325 0 : break;
2326 7 : case SQL_LIKE:
2327 7 : sc->token = SQL_NOT_LIKE;
2328 7 : break;
2329 0 : case SQL_NOT_LIKE:
2330 0 : sc->token = SQL_LIKE;
2331 0 : break;
2332 17 : case SQL_BETWEEN:
2333 17 : sc->token = SQL_NOT_BETWEEN;
2334 17 : break;
2335 11 : case SQL_NOT_BETWEEN:
2336 11 : sc->token = SQL_BETWEEN;
2337 11 : break;
2338 32 : case SQL_IS_NULL:
2339 32 : sc->token = SQL_IS_NOT_NULL;
2340 32 : break;
2341 15 : case SQL_IS_NOT_NULL:
2342 15 : sc->token = SQL_IS_NULL;
2343 15 : break;
2344 27 : case SQL_NOT: { /* nested NOTs eliminate each other */
2345 27 : if (sc->data.sym->token == SQL_ATOM) {
2346 5 : AtomNode *an = (AtomNode*) sc->data.sym;
2347 5 : sc = newAtomNode(sql->sa, an->a);
2348 22 : } else if (sc->data.sym->token == SQL_SELECT) {
2349 2 : SelectNode *sn = (SelectNode*) sc->data.sym;
2350 2 : sc = newSelectNode(sql->sa, sn->distinct, sn->selection, sn->into, sn->from, sn->where, sn->groupby, sn->having,
2351 : sn->orderby, sn->name, sn->limit, sn->offset, sn->sample, sn->seed, sn->window);
2352 : } else {
2353 20 : memmove(sc, sc->data.sym, sizeof(symbol));
2354 : }
2355 : } break;
2356 7662 : case SQL_COMPARE: {
2357 7662 : dnode *cmp_n = sc->data.lval->h;
2358 7662 : comp_type neg_cmp_type = negate_compare(compare_str2type(cmp_n->next->data.sval)); /* negate the comparator */
2359 7662 : if (cmp_n->next->next->next) {
2360 22 : switch(cmp_n->next->next->next->data.i_val)
2361 : {
2362 12 : case 0: /* negating ANY/ALL */
2363 12 : cmp_n->next->next->next->data.i_val = 1;
2364 12 : break;
2365 7 : case 1: /* negating ANY/ALL */
2366 7 : cmp_n->next->next->next->data.i_val = 0;
2367 7 : break;
2368 2 : case 2: /* negating IS [NOT] DINSTINCT FROM */
2369 2 : cmp_n->next->next->next->data.i_val = 3;
2370 2 : break;
2371 1 : case 3: /* negating IS [NOT] DINSTINCT FROM */
2372 1 : cmp_n->next->next->next->data.i_val = 2;
2373 1 : break;
2374 : }
2375 : }
2376 7662 : cmp_n->next->data.sval = sa_strdup(sql->sa, compare_func(neg_cmp_type, 0));
2377 7662 : } break;
2378 6818 : case SQL_AND:
2379 : case SQL_OR: {
2380 6818 : sc->data.lval->h->data.sym = negate_symbol_tree(sql, sc->data.lval->h->data.sym);
2381 6818 : sc->data.lval->h->next->data.sym= negate_symbol_tree(sql, sc->data.lval->h->next->data.sym);
2382 6818 : sc->token = sc->token == SQL_AND ? SQL_OR : SQL_AND;
2383 6818 : } break;
2384 : default:
2385 : break;
2386 : }
2387 16065 : return sc;
2388 : }
2389 :
2390 : static int
2391 3111 : exp_between_check_types(sql_subtype *res, sql_subtype *t1, sql_subtype *t2, sql_subtype *t3)
2392 : {
2393 3111 : bool type_found = false;
2394 3111 : sql_subtype super;
2395 :
2396 3111 : if (t1 && t2) {
2397 3105 : cmp_supertype(&super, t2, t1);
2398 3105 : type_found = true;
2399 6 : } else if (t1) {
2400 3 : super = *t1;
2401 3 : type_found = true;
2402 3 : } else if (t2) {
2403 1 : super = *t2;
2404 1 : type_found = true;
2405 : }
2406 3111 : if (t3) {
2407 3108 : if (type_found)
2408 3107 : cmp_supertype(&super, t3, &super);
2409 : else
2410 1 : super = *t3;
2411 : type_found = true;
2412 : }
2413 3 : if (!type_found)
2414 : return -1;
2415 3110 : *res = super;
2416 3110 : return 0;
2417 : }
2418 :
2419 : static bool
2420 116718 : exp_is_null_no_value_opt(sql_exp *e)
2421 : {
2422 116718 : if (!e)
2423 : return false;
2424 120623 : while (is_convert(e->type))
2425 3905 : e = e->l;
2426 233409 : return e->type == e_atom && e->l && atom_null(e->l);
2427 : }
2428 :
2429 : sql_exp *
2430 2536889 : rel_logical_value_exp(sql_query *query, sql_rel **rel, symbol *sc, int f, exp_kind ek)
2431 : {
2432 2536988 : mvc *sql = query->sql;
2433 :
2434 2536988 : if (!sc)
2435 : return NULL;
2436 :
2437 2536988 : if (mvc_highwater(sql))
2438 0 : return sql_error(sql, 10, SQLSTATE(42000) "Query too complex: running out of stack space");
2439 :
2440 2536994 : switch (sc->token) {
2441 51537 : case SQL_OR:
2442 : case SQL_AND:
2443 : {
2444 51537 : symbol *lo = sc->data.lval->h->data.sym;
2445 51537 : symbol *ro = sc->data.lval->h->next->data.sym;
2446 51537 : sql_exp *ls, *rs;
2447 :
2448 51537 : if (!(ls = rel_value_exp(query, rel, lo, f|sql_farg, ek)))
2449 : return NULL;
2450 51536 : if (!(rs = rel_value_exp(query, rel, ro, f|sql_farg, ek)))
2451 : return NULL;
2452 90954 : return rel_binop_(sql, rel ? *rel : NULL, ls, rs, "sys", sc->token == SQL_OR ? "or": "and", card_value, false);
2453 : }
2454 5 : case SQL_FILTER:
2455 : /* [ x,..] filter [ y,..] */
2456 : /* todo add anti, [ x,..] not filter [ y,...] */
2457 : /* no correlation */
2458 : {
2459 5 : dnode *ln = sc->data.lval->h->data.lval->h;
2460 5 : dnode *rn = sc->data.lval->h->next->next->data.lval->h;
2461 5 : dlist *filter_op = sc->data.lval->h->next->data.lval;
2462 5 : char *fname = qname_schema_object(filter_op);
2463 5 : char *sname = qname_schema(filter_op);
2464 5 : list *exps, *tl;
2465 5 : sql_subtype *obj_type = NULL;
2466 :
2467 5 : exps = sa_list(sql->sa);
2468 5 : tl = sa_list(sql->sa);
2469 15 : for (; ln; ln = ln->next) {
2470 5 : symbol *sym = ln->data.sym;
2471 :
2472 5 : sql_exp *e = rel_value_exp(query, rel, sym, f|sql_farg, ek);
2473 5 : if (!e)
2474 : return NULL;
2475 5 : if (!obj_type)
2476 5 : obj_type = exp_subtype(e);
2477 5 : list_append(exps, e);
2478 5 : append(tl, exp_subtype(e));
2479 : }
2480 13 : for (; rn; rn = rn->next) {
2481 10 : symbol *sym = rn->data.sym;
2482 :
2483 10 : sql_exp *e = rel_value_exp(query, rel, sym, f|sql_farg, ek);
2484 10 : if (!e)
2485 : return NULL;
2486 8 : list_append(exps, e);
2487 8 : append(tl, exp_subtype(e));
2488 : }
2489 : /* find the predicate filter function */
2490 3 : return _rel_nop(sql, sname, fname, tl, rel ? *rel : NULL, exps, ek);
2491 : }
2492 116434 : case SQL_COMPARE:
2493 : {
2494 116434 : dnode *n = sc->data.lval->h;
2495 116434 : symbol *lo = n->data.sym;
2496 116434 : symbol *ro = n->next->next->data.sym;
2497 116434 : char *compare_op = n->next->data.sval;
2498 116434 : int quantifier = 0, need_not = 0;
2499 116434 : sql_exp *rs = NULL, *ls;
2500 116434 : comp_type cmp_type = compare_str2type(compare_op);
2501 116434 : bool is_not_distinct_from = false;
2502 116434 : bool is_distinct_from = false;
2503 :
2504 : /*
2505 : * = ANY -> IN, <> ALL -> NOT( = ANY) -> NOT IN
2506 : * = ALL -> all(groupby(all, nil)), <> ANY -> NOT ( = ALL )
2507 : */
2508 116434 : if (n->next->next->next)
2509 256 : quantifier = n->next->next->next->data.i_val + 1;
2510 256 : assert(quantifier == 0 || quantifier == 1 || quantifier == 2 || quantifier == 3 || quantifier == 4);
2511 :
2512 : /* [NOT] DISTINCT FROM */
2513 116434 : if (quantifier == 3) {
2514 : is_not_distinct_from = true;
2515 : quantifier = 0;
2516 : }
2517 116421 : else if (quantifier == 4) {
2518 14 : is_distinct_from = true;
2519 14 : quantifier = 0;
2520 : }
2521 :
2522 116434 : if ((quantifier == 1 && cmp_type == cmp_equal) ||
2523 116368 : (quantifier == 2 && cmp_type == cmp_notequal)) {
2524 93 : dlist *dl = dlist_create(sql->sa);
2525 : /* map into IN/NOT IN */
2526 93 : sc->token = cmp_type==cmp_equal?SQL_IN:SQL_NOT_IN;
2527 93 : n->next->type = type_list;
2528 93 : n->next->data.lval = dl;
2529 93 : n->next->next->next = NULL; /* remove quantifier */
2530 93 : dl->h = n->next->next;
2531 93 : n->next->next = NULL; /* (remove comparison) moved righthand side */
2532 93 : return rel_logical_value_exp(query, rel, sc, f, ek);
2533 : }
2534 : /* <> ANY -> NOT (= ALL) */
2535 116341 : if (quantifier == 1 && cmp_type == cmp_notequal) {
2536 15 : need_not = 1;
2537 15 : quantifier = 2;
2538 15 : cmp_type = cmp_equal;
2539 15 : compare_op = "=";
2540 : }
2541 :
2542 116341 : ls = rel_value_exp(query, rel, lo, f|sql_farg, ek);
2543 116341 : if (!ls)
2544 : return NULL;
2545 116329 : if (quantifier)
2546 136 : ek.card = card_set;
2547 :
2548 116329 : rs = rel_value_exp(query, rel, ro, f|sql_farg, ek);
2549 116329 : if (!rs)
2550 : return NULL;
2551 :
2552 116319 : if (is_distinct_from || is_not_distinct_from) {
2553 27 : if (rel_convert_types(sql, rel ? *rel : NULL, rel ? *rel : NULL, &ls, &rs, 1, type_equal_no_any) < 0)
2554 : return NULL;
2555 41 : sql_exp* e = exp_compare(sql->sa, ls, rs, is_not_distinct_from?cmp_equal:cmp_notequal);
2556 27 : set_semantics(e);
2557 27 : return e;
2558 : }
2559 :
2560 116292 : if (rs->type == e_atom)
2561 104996 : quantifier = 0;
2562 :
2563 116292 : if (!exp_is_rel(ls) && !exp_is_rel(rs) && ls->card < rs->card) {
2564 14 : sql_exp *swap = ls; /* has to swap parameters like in the rel_logical_exp case */
2565 14 : ls = rs;
2566 14 : rs = swap;
2567 14 : cmp_type = swap_compare(cmp_type);
2568 : }
2569 :
2570 116292 : if (rel_convert_types(sql, rel ? *rel : NULL, rel ? *rel : NULL, &ls, &rs, 1, type_equal_no_any) < 0)
2571 : return NULL;
2572 116289 : if (exp_is_null_no_value_opt(ls) && exp_is_null_no_value_opt(rs))
2573 7 : return exp_atom(sql->sa, atom_general(sql->sa, sql_bind_localtype("bit"), NULL, 0));
2574 :
2575 116282 : return exp_compare_func(sql, ls, rs, compare_func(cmp_type, need_not), quantifier);
2576 : }
2577 : /* Set Member ship */
2578 29715 : case SQL_IN:
2579 : case SQL_NOT_IN:
2580 29715 : return rel_in_value_exp(query, rel, sc, f);
2581 1073 : case SQL_EXISTS:
2582 : case SQL_NOT_EXISTS:
2583 1073 : return rel_exists_value_exp(query, rel, sc, f);
2584 347 : case SQL_LIKE:
2585 : case SQL_NOT_LIKE:
2586 : {
2587 347 : symbol *lo = sc->data.lval->h->data.sym;
2588 347 : symbol *ro = sc->data.lval->h->next->data.sym;
2589 347 : int insensitive = sc->data.lval->h->next->next->data.i_val;
2590 347 : int anti = (sc->token == SQL_NOT_LIKE) != (sc->data.lval->h->next->next->next->data.i_val != 0);
2591 347 : sql_subtype *st = sql_bind_localtype("str");
2592 347 : sql_exp *le = rel_value_exp(query, rel, lo, f|sql_farg, ek), *re, *ee = NULL, *ie = exp_atom_bool(sql->sa, insensitive);
2593 :
2594 347 : if (!le)
2595 : return NULL;
2596 :
2597 347 : if (!exp_subtype(le))
2598 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: parameter not allowed on "
2599 : "left hand side of LIKE operator");
2600 :
2601 347 : lo = ro->data.lval->h->data.sym;
2602 : /* like uses a single string pattern */
2603 347 : ek.card = card_value;
2604 347 : re = rel_value_exp(query, rel, lo, f|sql_farg, ek);
2605 347 : if (!re)
2606 : return NULL;
2607 343 : if ((re = exp_check_type(sql, st, rel ? *rel : NULL, re, type_equal)) == NULL)
2608 0 : return sql_error(sql, 02, SQLSTATE(42000) "LIKE: wrong type, should be string");
2609 343 : if ((le = exp_check_type(sql, st, rel ? *rel : NULL, le, type_equal)) == NULL)
2610 0 : return sql_error(sql, 02, SQLSTATE(42000) "LIKE: wrong type, should be string");
2611 : /* Do we need to escape ? */
2612 343 : if (dlist_length(ro->data.lval) == 2) {
2613 63 : char *escape = ro->data.lval->h->next->data.sval;
2614 63 : ee = exp_atom(sql->sa, atom_string(sql->sa, st, sa_strdup(sql->sa, escape)));
2615 : } else {
2616 280 : ee = exp_atom(sql->sa, atom_string(sql->sa, st, sa_strdup(sql->sa, "")));
2617 : }
2618 573 : return rel_nop_(sql, rel ? *rel : NULL, le, re, ee, ie, "sys", anti ? "not_like" : "like", card_value);
2619 : }
2620 164 : case SQL_BETWEEN:
2621 : case SQL_NOT_BETWEEN:
2622 : {
2623 164 : symbol *lo = sc->data.lval->h->data.sym;
2624 164 : int symmetric = sc->data.lval->h->next->data.i_val;
2625 164 : symbol *ro1 = sc->data.lval->h->next->next->data.sym;
2626 164 : symbol *ro2 = sc->data.lval->h->next->next->next->data.sym;
2627 164 : sql_exp *le, *re1, *re2;
2628 164 : sql_subtype super;
2629 :
2630 164 : assert(sc->data.lval->h->next->type == type_int);
2631 :
2632 164 : if (!(le = rel_value_exp(query, rel, lo, f|sql_farg, ek)))
2633 : return NULL;
2634 163 : if (!(re1 = rel_value_exp(query, rel, ro1, f|sql_farg, ek)))
2635 : return NULL;
2636 160 : if (!(re2 = rel_value_exp(query, rel, ro2, f|sql_farg, ek)))
2637 : return NULL;
2638 :
2639 155 : if (exp_between_check_types(&super, exp_subtype(le), exp_subtype(re1), exp_subtype(re2)) < 0)
2640 0 : return sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) on both sides of an expression");
2641 :
2642 155 : if ((le = exp_check_type(sql, &super, rel ? *rel:NULL, le, type_equal)) == NULL ||
2643 155 : (re1 = exp_check_type(sql, &super, rel ? *rel:NULL, re1, type_equal)) == NULL ||
2644 155 : (re2 = exp_check_type(sql, &super, rel ? *rel:NULL, re2, type_equal)) == NULL)
2645 0 : return NULL;
2646 :
2647 155 : le = exp_compare2(sql->sa, le, re1, re2, 3, symmetric);
2648 155 : if (sc->token == SQL_NOT_BETWEEN)
2649 56 : set_anti(le);
2650 : return le;
2651 : }
2652 16277 : case SQL_IS_NULL:
2653 : case SQL_IS_NOT_NULL:
2654 : /* is (NOT) NULL */
2655 : {
2656 16277 : sql_exp *le = rel_value_exp(query, rel, sc->data.sym, f|sql_farg, ek);
2657 :
2658 16277 : if (!le)
2659 : return NULL;
2660 20527 : le = rel_unop_(sql, rel ? *rel : NULL, le, "sys", sc->token == SQL_IS_NULL ? "isnull" : "isnotnull", card_value);
2661 16274 : if (!le)
2662 : return NULL;
2663 16274 : set_has_no_nil(le);
2664 16274 : return le;
2665 : }
2666 18914 : case SQL_NOT: {
2667 18914 : if (not_symbol_can_be_propagated(sql, sc->data.sym)) {
2668 99 : sc->data.sym = negate_symbol_tree(sql, sc->data.sym);
2669 99 : return rel_logical_value_exp(query, rel, sc->data.sym, f, ek);
2670 : }
2671 18815 : sql_exp *le = rel_value_exp(query, rel, sc->data.sym, f|sql_farg, ek);
2672 :
2673 18815 : if (!le)
2674 : return NULL;
2675 18814 : return rel_unop_(sql, rel ? *rel : NULL, le, "sys", "not", card_value);
2676 : }
2677 : case SQL_ATOM: {
2678 2281608 : AtomNode *an = (AtomNode *) sc;
2679 2281608 : assert(an && an->a);
2680 2281608 : return exp_atom(sql->sa, an->a);
2681 : }
2682 20400 : case SQL_IDENT:
2683 : case SQL_COLUMN:
2684 20400 : return rel_column_ref(query, rel, sc, f);
2685 201 : case SQL_UNION:
2686 : case SQL_EXCEPT:
2687 : case SQL_INTERSECT: {
2688 201 : sql_rel *sq;
2689 :
2690 201 : if (is_psm_call(f) || is_sql_merge(f))
2691 4 : return sql_error(sql, 02, SQLSTATE(42000) "%s: subqueries not supported inside %s", is_psm_call(f) ? "CALL" : "MERGE", is_psm_call(f) ? "CALL statements" : "MERGE conditions");
2692 199 : if (rel && *rel)
2693 141 : query_push_outer(query, *rel, f);
2694 199 : sq = rel_setquery(query, sc);
2695 199 : if (rel && *rel) {
2696 141 : *rel = query_pop_outer(query);
2697 141 : if (is_sql_join(f) && is_groupby((*rel)->op)) {
2698 0 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed in JOIN conditions");
2699 141 : } else if (is_sql_where(f) && is_groupby((*rel)->op)) {
2700 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: aggregate functions not allowed in WHERE clause");
2701 141 : } else if ((is_sql_update_set(f) || is_sql_psm(f)) && is_groupby((*rel)->op)) {
2702 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: aggregate functions not allowed in SET, WHILE, IF, ELSE, CASE, WHEN, RETURN, ANALYZE clauses");
2703 : }
2704 : }
2705 199 : if (!sq)
2706 : return NULL;
2707 197 : if (ek.type == type_value && ek.card <= card_set && is_project(sq->op) && list_length(sq->exps) > 1)
2708 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: subquery must return only one column");
2709 196 : if (ek.type == type_relation && is_project(sq->op) && list_length(sq->exps) != ek.type)
2710 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: subquery has too %s columns", list_length(sq->exps) < ek.type ? "few" : "many");
2711 302 : if (ek.type == type_value && ek.card < card_set && sq->card >= CARD_AGGR && (is_sql_sel(f) | is_sql_having(f) | is_sql_farg(f) |
2712 106 : ( is_sql_where(f) && rel && (!*rel || is_basetable((*rel)->op) || is_simple_project((*rel)->op) || is_joinop((*rel)->op)))))
2713 106 : sq = rel_zero_or_one(sql, sq, ek);
2714 196 : return exp_rel(sql, sq);
2715 : }
2716 1 : case SQL_DEFAULT:
2717 1 : return sql_error(sql, 02, SQLSTATE(42000) "DEFAULT keyword not allowed outside insert and update statements");
2718 318 : default: {
2719 318 : sql_exp *le = rel_value_exp(query, rel, sc, f|sql_farg, ek);
2720 318 : sql_subtype bt;
2721 :
2722 318 : if (!le)
2723 : return NULL;
2724 316 : sql_find_subtype(&bt, "boolean", 0, 0);
2725 316 : if ((le = exp_check_type(sql, &bt, rel ? *rel : NULL, le, type_equal)) == NULL)
2726 : return NULL;
2727 316 : return rel_binop_(sql, rel ? *rel : NULL, le, exp_atom_bool(sql->sa, 1), "sys", "=", 0, true);
2728 : }
2729 : }
2730 : /* never reached, as all switch cases have a `return` */
2731 : }
2732 :
2733 : sql_rel *
2734 632654 : rel_logical_exp(sql_query *query, sql_rel *rel, symbol *sc, int f)
2735 : {
2736 632654 : mvc *sql = query->sql;
2737 632654 : exp_kind ek = {type_value, card_column, TRUE};
2738 :
2739 632654 : if (!sc)
2740 : return NULL;
2741 :
2742 632654 : if (mvc_highwater(sql))
2743 0 : return sql_error(sql, 10, SQLSTATE(42000) "Query too complex: running out of stack space");
2744 :
2745 632654 : switch (sc->token) {
2746 18969 : case SQL_OR:
2747 : {
2748 18969 : list *exps = NULL, *lexps = NULL, *rexps = NULL;
2749 18969 : symbol *lo = sc->data.lval->h->data.sym;
2750 18969 : symbol *ro = sc->data.lval->h->next->data.sym;
2751 18969 : sql_rel *lr, *rr;
2752 :
2753 18969 : if (!rel)
2754 : return NULL;
2755 :
2756 18969 : lr = rel;
2757 18969 : rr = rel_dup(lr);
2758 :
2759 18969 : if (is_outerjoin(rel->op) && !is_processed(rel)) {
2760 44 : exps = rel->exps;
2761 :
2762 44 : lr = rel_select_copy(sql->sa, lr, sa_list(sql->sa));
2763 44 : lr = rel_logical_exp(query, lr, lo, f | sql_or);
2764 44 : if (!lr)
2765 : return NULL;
2766 43 : query_processed(query);
2767 43 : rr = rel_select_copy(sql->sa, rr, sa_list(sql->sa));
2768 43 : rr = rel_logical_exp(query, rr, ro, f | sql_or);
2769 43 : if (!rr)
2770 : return NULL;
2771 42 : if (lr->l == rr->l) {
2772 42 : lexps = lr->exps;
2773 42 : lr = lr->l;
2774 42 : rexps = rr->exps;
2775 42 : rr = rr->l;
2776 : }
2777 42 : rel = NULL;
2778 : } else {
2779 18925 : lr = rel_logical_exp(query, lr, lo, f | sql_or);
2780 18925 : if (!lr)
2781 : return NULL;
2782 18923 : rr = rel_logical_exp(query, rr, ro, f | sql_or);
2783 : }
2784 :
2785 18965 : if (!lr || !rr)
2786 : return NULL;
2787 18965 : return rel_or(sql, rel, lr, rr, exps, lexps, rexps);
2788 : }
2789 191952 : case SQL_AND:
2790 : {
2791 191952 : symbol *lo = sc->data.lval->h->data.sym;
2792 191952 : symbol *ro = sc->data.lval->h->next->data.sym;
2793 191952 : rel = rel_logical_exp(query, rel, lo, f);
2794 191952 : if (!rel)
2795 : return NULL;
2796 191945 : return rel_logical_exp(query, rel, ro, f);
2797 : }
2798 60 : case SQL_FILTER:
2799 : /* [ x,..] filter [ y,..] */
2800 : /* todo add anti, [ x,..] NOT filter [ y,...] */
2801 : /* no correlation */
2802 : {
2803 60 : dnode *ln = sc->data.lval->h->data.lval->h;
2804 60 : dnode *rn = sc->data.lval->h->next->next->data.lval->h;
2805 60 : dlist *filter_op = sc->data.lval->h->next->data.lval;
2806 60 : char *fname = qname_schema_object(filter_op);
2807 60 : char *sname = qname_schema(filter_op);
2808 60 : list *l, *r;
2809 :
2810 60 : l = sa_list(sql->sa);
2811 60 : r = sa_list(sql->sa);
2812 180 : for (; ln; ln = ln->next) {
2813 60 : symbol *sym = ln->data.sym;
2814 :
2815 60 : sql_exp *e = rel_value_exp(query, &rel, sym, f|sql_farg, ek);
2816 60 : if (!e)
2817 : return NULL;
2818 60 : list_append(l, e);
2819 : }
2820 163 : for (; rn; rn = rn->next) {
2821 103 : symbol *sym = rn->data.sym;
2822 :
2823 103 : sql_exp *e = rel_value_exp(query, &rel, sym, f|sql_farg, ek);
2824 103 : if (!e)
2825 : return NULL;
2826 103 : list_append(r, e);
2827 : }
2828 60 : return rel_filter(sql, rel, l, r, sname, fname, 0, f);
2829 : }
2830 349423 : case SQL_COMPARE:
2831 : {
2832 349423 : dnode *n = sc->data.lval->h;
2833 349423 : symbol *lo = n->data.sym;
2834 349423 : symbol *ro = n->next->next->data.sym;
2835 349423 : char *compare_op = n->next->data.sval;
2836 349423 : int quantifier = 0;
2837 349423 : int is_semantics = 0;
2838 349423 : bool is_distinct_from = false;
2839 :
2840 349423 : if (n->next->next->next)
2841 131 : quantifier = n->next->next->next->data.i_val + 1;
2842 131 : assert(quantifier == 0 || quantifier == 1 || quantifier == 2 || quantifier == 3 || quantifier == 4);
2843 :
2844 349423 : if (quantifier >= 3) {
2845 10 : if (quantifier == 4) {
2846 6 : is_distinct_from = true;
2847 6 : compare_op = "<>";
2848 : }
2849 : quantifier = 0;
2850 : is_semantics = 1;
2851 : }
2852 349423 : if (is_distinct_from) {
2853 6 : sql_exp* ls = rel_value_exp(query, &rel, lo, f|sql_farg, ek);
2854 6 : if (!ls)
2855 : return NULL;
2856 6 : sql_exp* rs = rel_value_exp(query, &rel, ro, f|sql_farg, ek);
2857 6 : if (!rs)
2858 : return NULL;
2859 :
2860 6 : bool ls_is_non_null_atom = exp_is_atom(ls) && exp_is_not_null(ls);
2861 6 : bool rs_is_non_null_atom = exp_is_atom(rs) && exp_is_not_null(rs);
2862 :
2863 6 : if (ls_is_non_null_atom || rs_is_non_null_atom) {
2864 4 : sql_rel *r = rel_dup(rel);
2865 4 : sql_rel* l = rel_compare(query, rel, sc, lo, ro, compare_op, f | sql_or, ek, quantifier, 0);
2866 4 : if (!l)
2867 : return NULL;
2868 3 : sql_subtype *t;
2869 5 : if (!(t = exp_subtype(rs_is_non_null_atom?ls:rs)))
2870 0 : return sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter for IS NULL operator");
2871 3 : sql_exp* e = exp_compare(sql->sa, rs_is_non_null_atom?ls:rs, exp_atom(sql->sa, atom_general(sql->sa, t, NULL, 0)), cmp_equal);
2872 3 : set_has_no_nil(e);
2873 3 : set_semantics(e);
2874 :
2875 3 : r = rel_select_push_compare_exp_down(sql, r, e, e->l, e->r, NULL, f | sql_or);
2876 3 : if (!r)
2877 : return NULL;
2878 3 : return rel_or(sql, rel, l, r, NULL, NULL, NULL);
2879 : }
2880 : }
2881 :
2882 : /* [NOT] DISTINCT FROM */
2883 349419 : return rel_compare(query, rel, sc, lo, ro, compare_op, f, ek, quantifier, is_semantics);
2884 : }
2885 : /* Set Member ship */
2886 32615 : case SQL_IN:
2887 : case SQL_NOT_IN:
2888 32615 : return rel_in_exp(query, rel, sc, f);
2889 991 : case SQL_EXISTS:
2890 : case SQL_NOT_EXISTS:
2891 991 : return rel_exists_exp(query, rel , sc, f);
2892 3331 : case SQL_LIKE:
2893 : case SQL_NOT_LIKE:
2894 : {
2895 3331 : symbol *lo = sc->data.lval->h->data.sym;
2896 3331 : symbol *ro = sc->data.lval->h->next->data.sym;
2897 3331 : int insensitive = sc->data.lval->h->next->next->data.i_val;
2898 3331 : int anti = (sc->token == SQL_NOT_LIKE) != (sc->data.lval->h->next->next->next->data.i_val != 0);
2899 3331 : sql_subtype *st = sql_bind_localtype("str");
2900 3331 : sql_exp *le = rel_value_exp(query, &rel, lo, f|sql_farg, ek), *re, *ee = NULL, *ie = exp_atom_bool(sql->sa, insensitive);
2901 :
2902 3331 : if (!le)
2903 : return NULL;
2904 :
2905 3329 : if (!exp_subtype(le))
2906 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: parameter not allowed on "
2907 : "left hand side of LIKE operator");
2908 :
2909 : /* Do we need to escape ? */
2910 3329 : if (dlist_length(ro->data.lval) == 2) {
2911 82 : char *escape = ro->data.lval->h->next->data.sval;
2912 82 : ee = exp_atom(sql->sa, atom_string(sql->sa, st, sa_strdup(sql->sa, escape)));
2913 : } else {
2914 3247 : ee = exp_atom(sql->sa, atom_string(sql->sa, st, sa_strdup(sql->sa, "")));
2915 : }
2916 3329 : ro = ro->data.lval->h->data.sym;
2917 3329 : re = rel_value_exp(query, &rel, ro, f|sql_farg, ek);
2918 3329 : if (!re)
2919 : return NULL;
2920 3328 : if ((re = exp_check_type(sql, st, rel, re, type_equal)) == NULL)
2921 0 : return sql_error(sql, 02, SQLSTATE(42000) "LIKE: wrong type, should be string");
2922 3328 : if ((le = exp_check_type(sql, st, rel, le, type_equal)) == NULL)
2923 0 : return sql_error(sql, 02, SQLSTATE(42000) "LIKE: wrong type, should be string");
2924 3328 : return rel_filter_exp_(sql, rel, le, re, ee, ie, "like", anti, f);
2925 : }
2926 2960 : case SQL_BETWEEN:
2927 : case SQL_NOT_BETWEEN:
2928 : {
2929 2960 : symbol *lo = sc->data.lval->h->data.sym;
2930 2960 : int symmetric = sc->data.lval->h->next->data.i_val;
2931 2960 : symbol *ro1 = sc->data.lval->h->next->next->data.sym;
2932 2960 : symbol *ro2 = sc->data.lval->h->next->next->next->data.sym;
2933 2960 : sql_exp *le, *re1, *re2;
2934 2960 : sql_subtype super;
2935 :
2936 2960 : assert(sc->data.lval->h->next->type == type_int);
2937 :
2938 2960 : if (!(le = rel_value_exp(query, &rel, lo, f|sql_farg, ek)))
2939 : return NULL;
2940 2958 : if (!(re1 = rel_value_exp(query, &rel, ro1, f|sql_farg, ek)))
2941 : return NULL;
2942 2956 : if (!(re2 = rel_value_exp(query, &rel, ro2, f|sql_farg, ek)))
2943 : return NULL;
2944 :
2945 2956 : if (exp_between_check_types(&super, exp_subtype(le), exp_subtype(re1), exp_subtype(re2)) < 0)
2946 1 : return sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) on both sides of an expression");
2947 :
2948 2955 : if ((le = exp_check_type(sql, &super, rel, le, type_equal)) == NULL ||
2949 2955 : (re1 = exp_check_type(sql, &super, rel, re1, type_equal)) == NULL ||
2950 2955 : (re2 = exp_check_type(sql, &super, rel, re2, type_equal)) == NULL)
2951 1 : return NULL;
2952 :
2953 2954 : return rel_compare_exp_(query, rel, le, re1, re2, 3, sc->token == SQL_NOT_BETWEEN ? 1 : 0, 0, f, symmetric, 0);
2954 : }
2955 10601 : case SQL_IS_NULL:
2956 : case SQL_IS_NOT_NULL:
2957 : /* is (NOT) NULL */
2958 : {
2959 10601 : sql_exp *le = rel_value_exp(query, &rel, sc->data.sym, f|sql_farg, ek);
2960 10601 : sql_subtype *t;
2961 :
2962 10601 : if (!le)
2963 : return NULL;
2964 10597 : if (!(t = exp_subtype(le)))
2965 1 : return sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) for IS%s NULL operator", sc->token == SQL_IS_NOT_NULL ? " NOT" : "");
2966 10596 : le = exp_compare(sql->sa, le, exp_atom(sql->sa, atom_general(sql->sa, t, NULL, 0)), cmp_equal);
2967 10596 : if (sc->token == SQL_IS_NOT_NULL)
2968 2582 : set_anti(le);
2969 10596 : set_has_no_nil(le);
2970 10596 : set_semantics(le);
2971 10596 : return rel_select_push_compare_exp_down(sql, rel, le, le->l, le->r, NULL, f);
2972 : }
2973 20078 : case SQL_NOT: {
2974 20078 : if (not_symbol_can_be_propagated(sql, sc->data.sym)) {
2975 2330 : sc->data.sym = negate_symbol_tree(sql, sc->data.sym);
2976 2330 : return rel_logical_exp(query, rel, sc->data.sym, f);
2977 : }
2978 17748 : sql_exp *le = rel_value_exp(query, &rel, sc->data.sym, f|sql_farg, ek);
2979 17748 : sql_subtype bt;
2980 :
2981 17748 : sql_find_subtype(&bt, "boolean", 0, 0);
2982 17748 : if (!le || !(le = exp_check_type(sql, &bt, rel, le, type_equal)))
2983 1 : return NULL;
2984 17747 : le = exp_compare(sql->sa, le, exp_atom_bool(sql->sa, 0), cmp_equal);
2985 17747 : return rel_select_push_compare_exp_down(sql, rel, le, le->l, le->r, NULL, f);
2986 : }
2987 627 : case SQL_ATOM: {
2988 : /* TRUE or FALSE */
2989 627 : sql_rel *or = rel;
2990 627 : AtomNode *an = (AtomNode *) sc;
2991 627 : sql_exp *e = exp_atom(sql->sa, an->a);
2992 :
2993 627 : if (e) {
2994 627 : sql_subtype bt;
2995 :
2996 627 : sql_find_subtype(&bt, "boolean", 0, 0);
2997 627 : e = exp_check_type(sql, &bt, rel, e, type_equal);
2998 : }
2999 627 : if (!e || or != rel)
3000 2 : return NULL;
3001 625 : e = exp_compare(sql->sa, e, exp_atom_bool(sql->sa, 1), cmp_equal);
3002 625 : return rel_select_push_compare_exp_down(sql, rel, e, e->l, e->r, NULL, f);
3003 : }
3004 708 : case SQL_IDENT:
3005 : case SQL_COLUMN: {
3006 708 : sql_rel *or = rel;
3007 708 : sql_exp *e = rel_column_ref(query, &rel, sc, f);
3008 :
3009 708 : if (e) {
3010 705 : sql_subtype bt;
3011 :
3012 705 : sql_find_subtype(&bt, "boolean", 0, 0);
3013 705 : e = exp_check_type(sql, &bt, rel, e, type_equal);
3014 : }
3015 705 : if (!e || or != rel)
3016 3 : return NULL;
3017 705 : e = exp_compare(sql->sa, e, exp_atom_bool(sql->sa, 1), cmp_equal);
3018 705 : return rel_select_push_compare_exp_down(sql, rel, e, e->l, e->r, NULL, f);
3019 : }
3020 12 : case SQL_UNION:
3021 : case SQL_EXCEPT:
3022 : case SQL_INTERSECT: {
3023 12 : sql_rel *sq;
3024 :
3025 12 : if (is_psm_call(f) || is_sql_merge(f))
3026 3 : return sql_error(sql, 02, SQLSTATE(42000) "%s: set operations not supported inside %s", is_psm_call(f) ? "CALL" : "MERGE", is_psm_call(f) ? "CALL statements" : "MERGE conditions");
3027 11 : if (rel)
3028 11 : query_push_outer(query, rel, f);
3029 11 : sq = rel_setquery(query, sc);
3030 11 : if (rel) {
3031 11 : rel = query_pop_outer(query);
3032 11 : if (is_sql_join(f) && is_groupby(rel->op)) {
3033 0 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed in JOIN conditions");
3034 11 : } else if (is_sql_where(f) && is_groupby(rel->op)) {
3035 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: aggregate functions not allowed in WHERE clause");
3036 11 : } else if ((is_sql_update_set(f) || is_sql_psm(f)) && is_groupby(rel->op)) {
3037 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: aggregate functions not allowed in SET, WHILE, IF, ELSE, CASE, WHEN, RETURN, ANALYZE clauses");
3038 : }
3039 : }
3040 11 : if (!sq)
3041 : return NULL;
3042 11 : assert(ek.type == type_value); /* I don't expect IN tuple matching calls to land here */
3043 11 : if (is_sql_where(f) && is_groupby(rel->op))
3044 0 : assert(0);
3045 11 : if (ek.card <= card_set && is_project(sq->op) && list_length(sq->exps) > 1)
3046 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: subquery must return only one column");
3047 10 : if (!rel)
3048 : return sq;
3049 10 : sq = rel_zero_or_one(sql, sq, ek);
3050 10 : if (is_sql_where(f) || is_sql_having(f)) {
3051 10 : sql_exp *le = exp_rel(sql, sq);
3052 10 : sql_subtype bt;
3053 :
3054 10 : sql_find_subtype(&bt, "boolean", 0, 0);
3055 10 : le = exp_check_type(sql, &bt, rel, le, type_equal);
3056 10 : if (!le)
3057 : return NULL;
3058 10 : le = exp_compare(sql->sa, le, exp_atom_bool(sql->sa, 1), cmp_equal);
3059 10 : return rel_select_push_compare_exp_down(sql, rel, le, le->l, le->r, NULL, f);
3060 : } else {
3061 0 : sq = rel_crossproduct(sql->sa, rel, sq, (f==sql_sel || is_single(sq))?op_left:op_join);
3062 0 : set_processed(sq);
3063 : }
3064 0 : return sq;
3065 : }
3066 0 : case SQL_DEFAULT:
3067 0 : return sql_error(sql, 02, SQLSTATE(42000) "DEFAULT keyword not allowed outside insert and update statements");
3068 327 : default: {
3069 327 : sql_exp *le = rel_value_exp(query, &rel, sc, f|sql_farg, ek);
3070 327 : sql_subtype bt;
3071 :
3072 327 : if (!le)
3073 : return NULL;
3074 302 : if (le && (!is_compare(le->type) || le->flag > cmp_filter)) {
3075 288 : sql_find_subtype(&bt, "boolean", 0, 0);
3076 288 : if (!(le = exp_check_type(sql, &bt, rel, le, type_equal)))
3077 : return NULL;
3078 288 : le = exp_compare(sql->sa, le, exp_atom_bool(sql->sa, 1), cmp_equal);
3079 : }
3080 302 : if (le->flag == cmp_filter)
3081 13 : return rel_select_push_filter_exp_down(sql, rel, le, le->l, le->r, f);
3082 : else
3083 289 : return rel_select_push_compare_exp_down(sql, rel, le, le->l, le->r, le->f, f);
3084 : }
3085 : }
3086 : /* never reached, as all switch cases have a `return` */
3087 : }
3088 :
3089 : static sql_exp * _rel_aggr(sql_query *query, sql_rel **rel, int distinct, char *sname, char *aname, dnode *arguments, int f);
3090 : static sql_exp *rel_aggr(sql_query *query, sql_rel **rel, symbol *se, int f);
3091 :
3092 : static sql_exp *
3093 1827 : rel_op(sql_query *query, sql_rel **rel, symbol *se, int f, exp_kind ek )
3094 : {
3095 1827 : mvc *sql = query->sql;
3096 1827 : dnode *l = se->data.lval->h;
3097 1827 : char *fname = qname_schema_object(l->data.lval);
3098 1827 : char *sname = qname_schema(l->data.lval);
3099 :
3100 1827 : if (find_func(sql, sname, fname, 0, F_AGGR, false, NULL, NULL))
3101 0 : return _rel_aggr(query, rel, 0, sname, fname, NULL, f);
3102 1827 : sql->session->status = 0; /* if the function was not found clean the error */
3103 1827 : sql->errstr[0] = '\0';
3104 1827 : return rel_op_(sql, sname, fname, ek);
3105 : }
3106 :
3107 : sql_exp *
3108 94698 : rel_unop_(mvc *sql, sql_rel *rel, sql_exp *e, char *sname, char *fname, int card)
3109 : {
3110 94698 : bool found = false;
3111 94698 : sql_subtype *t = exp_subtype(e);
3112 94698 : sql_ftype type = (card == card_loader)?F_LOADER:((card == card_none)?F_PROC:
3113 : ((card == card_relation)?F_UNION:F_FUNC));
3114 :
3115 94698 : sql_subfunc *f = bind_func(sql, sname, fname, t, NULL, 1, type, false, &found, false);
3116 94698 : if (f && !f->func->vararg) {
3117 94626 : sql_arg *a = f->func->ops->h->data;
3118 94626 : t = &a->type;
3119 : }
3120 94698 : if (f && t && type_has_tz(t) && f->func->fix_scale == SCALE_FIX) {
3121 : /* set timezone (using msec (.3)) */
3122 0 : sql_subtype *intsec = sql_bind_subtype(sql->sa, "sec_interval", 10 /*hour to second */, 3);
3123 0 : atom *a = atom_int(sql->sa, intsec, sql->timezone);
3124 0 : sql_exp *tz = exp_atom(sql->sa, a);
3125 :
3126 0 : e = rel_binop_(sql, rel, e, tz, "sys", "sql_add", card, true);
3127 0 : if (!e)
3128 : return NULL;
3129 : }
3130 94676 : if (f) {
3131 94627 : if (check_card(card, f)) {
3132 94627 : list *args = list_append(sa_list(sql->sa), e);
3133 94627 : if (!f->func->vararg)
3134 189252 : args = check_arguments_and_find_largest_any_type(sql, rel, args, f, card == card_relation && e->card > CARD_ATOM, false);
3135 94627 : if (args)
3136 94627 : return exp_op(sql->sa, args, f);
3137 : }
3138 0 : found = false; /* reset found */
3139 0 : f = NULL;
3140 : }
3141 : /* reset error */
3142 71 : sql->session->status = 0;
3143 71 : sql->errstr[0] = '\0';
3144 212 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: %s unary operator %s%s%s'%s'(%s)",
3145 141 : found ? "insufficient privileges for" : "no such", sname ? "'":"", sname ? sname : "", sname ? "'.":"", fname, t ? t->type->base.name : "?");
3146 : }
3147 :
3148 : static sql_exp *
3149 77657 : rel_unop(sql_query *query, sql_rel **rel, symbol *se, int f, exp_kind ek)
3150 : {
3151 77657 : mvc *sql = query->sql;
3152 77657 : dnode *l = se->data.lval->h;
3153 77657 : char *fname = qname_schema_object(l->data.lval);
3154 77657 : char *sname = qname_schema(l->data.lval);
3155 77657 : exp_kind iek = {type_value, card_column, FALSE};
3156 77657 : sql_exp *e = NULL;
3157 :
3158 77657 : if (find_func(sql, sname, fname, 1, F_AGGR, false, NULL, NULL))
3159 18824 : return rel_aggr(query, rel, se, f);
3160 :
3161 58833 : sql->session->status = 0; /* if the function was not found clean the error */
3162 58833 : sql->errstr[0] = '\0';
3163 58833 : if (!(e = rel_value_exp(query, rel, l->next->next->data.sym, f|sql_farg, iek)))
3164 : return NULL;
3165 58819 : return rel_unop_(sql, rel ? *rel : NULL, e, sname, fname, ek.card);
3166 : }
3167 :
3168 : sql_exp *
3169 522736 : rel_binop_(mvc *sql, sql_rel *rel, sql_exp *l, sql_exp *r, char *sname, char *fname, int card, bool exact)
3170 : {
3171 522736 : sql_subtype *t1 = exp_subtype(l), *t2 = exp_subtype(r);
3172 522736 : sql_ftype type = (card == card_loader)?F_LOADER:((card == card_none)?F_PROC:((card == card_relation)?F_UNION:F_FUNC));
3173 522736 : bool found = false;
3174 :
3175 522736 : if (card == card_loader)
3176 0 : card = card_none;
3177 :
3178 522736 : if (is_commutative(sname, fname) && l->card < r->card) { /* move constants to the right if possible */
3179 : sql_subtype *tmp = t1;
3180 522736 : t1 = t2;
3181 522736 : t2 = tmp;
3182 : sql_exp *res = l;
3183 522736 : l = r;
3184 522736 : r = res;
3185 : }
3186 : /* swap complex types (intervals) to left side of +, * */
3187 522736 : if (t1 && t2 && is_commutative(sname, fname)) {
3188 121355 : if ((EC_INTERVAL(t1->type->eclass) && EC_TEMP(t2->type->eclass)) ||
3189 121353 : ((!EC_TEMP(t1->type->eclass) && !EC_INTERVAL(t1->type->eclass)) && EC_INTERVAL(t2->type->eclass))) {
3190 : sql_subtype *tmp = t1;
3191 522736 : t1 = t2;
3192 522736 : t2 = tmp;
3193 : sql_exp *res = l;
3194 522736 : l = r;
3195 522736 : r = res;
3196 : }
3197 : }
3198 :
3199 522736 : sql_subfunc *f = bind_func(sql, sname, fname, t1, t2, 2, type, false, &found, exact);
3200 522736 : if (f && check_card(card,f)) {
3201 522574 : t1 = exp_subtype(l);
3202 522574 : t2 = exp_subtype(r);
3203 522574 : list *args = list_append(list_append(sa_list(sql->sa), l), r);
3204 522574 : if (!f->func->vararg)
3205 522573 : args = check_arguments_and_find_largest_any_type(sql, rel, args, f, 0, false);
3206 522574 : if (args)
3207 522572 : return exp_op(sql->sa, args, f);
3208 : return NULL;
3209 : }
3210 :
3211 162 : if (!exp_subtype(l) || !exp_subtype(r))
3212 0 : return sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) on both sides of an expression");
3213 162 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: %s binary operator %s%s%s'%s'(%s,%s)",
3214 162 : found ? "insufficient privileges for" : "no such", sname ? "'":"", sname ? sname : "", sname ? "'.":"", fname,
3215 162 : exp_subtype(l)->type->base.name, exp_subtype(r)->type->base.name);
3216 : }
3217 :
3218 : static sql_exp *
3219 373954 : rel_binop(sql_query *query, sql_rel **rel, symbol *se, int f, exp_kind ek)
3220 : {
3221 373954 : mvc *sql = query->sql;
3222 373954 : dnode *dl = se->data.lval->h;
3223 373954 : sql_exp *l, *r;
3224 373954 : char *fname = qname_schema_object(dl->data.lval);
3225 373954 : char *sname = qname_schema(dl->data.lval);
3226 373954 : exp_kind iek = {type_value, card_column, FALSE};
3227 :
3228 373954 : if (find_func(sql, sname, fname, 2, F_AGGR, false, NULL, NULL))
3229 4190 : return rel_aggr(query, rel, se, f);
3230 :
3231 369764 : sql->session->status = 0; /* if the function was not found clean the error */
3232 369764 : sql->errstr[0] = '\0';
3233 369764 : if (!(l = rel_value_exp(query, rel, dl->next->next->data.sym, f|sql_farg, iek)))
3234 : return NULL;
3235 369735 : if (!(r = rel_value_exp(query, rel, dl->next->next->next->data.sym, f|sql_farg, iek)))
3236 : return NULL;
3237 369696 : return rel_binop_(sql, rel ? *rel : NULL, l, r, sname, fname, ek.card, false);
3238 : }
3239 :
3240 : sql_exp *
3241 530 : rel_nop_(mvc *sql, sql_rel *rel, sql_exp *a1, sql_exp *a2, sql_exp *a3, sql_exp *a4, char *sname, char *fname, int card)
3242 : {
3243 530 : list *tl = sa_list(sql->sa);
3244 530 : sql_subfunc *f = NULL;
3245 530 : sql_ftype type = (card == card_none)?F_PROC:((card == card_relation)?F_UNION:F_FUNC);
3246 :
3247 : /* rel_nop_ should only be called for functions available to everyone, ie defined at sql_types! */
3248 530 : (void) rel;
3249 530 : append(tl, exp_subtype(a1));
3250 530 : append(tl, exp_subtype(a2));
3251 530 : append(tl, exp_subtype(a3));
3252 530 : if (a4)
3253 371 : append(tl, exp_subtype(a4));
3254 :
3255 530 : if (!(f = bind_func_(sql, sname, fname, tl, type, false, NULL, true)))
3256 : return NULL;
3257 530 : if (!a4)
3258 159 : return exp_op3(sql->sa, a1,a2,a3,f);
3259 371 : return exp_op4(sql->sa, a1,a2,a3,a4,f);
3260 : }
3261 :
3262 : static sql_func *
3263 3 : inplace_func(mvc *sql)
3264 : {
3265 3 : sql_func *f = SA_NEW(sql->sa, sql_func);
3266 :
3267 3 : *f = (sql_func) {
3268 : .mod = "",
3269 : .imp = "",
3270 : .type = F_PROC,
3271 : .lang = FUNC_LANG_INT,
3272 : .query = NULL,
3273 3 : .ops = sql->params,
3274 : .res = NULL,
3275 : };
3276 3 : base_init(sql->sa, &f->base, 0, true, NULL);
3277 3 : f->base.new = 1;
3278 3 : f->base.id = -1;
3279 3 : f->base.name = "-1";
3280 3 : f->instantiated = TRUE;
3281 3 : return f;
3282 : }
3283 :
3284 : static list *
3285 3 : reorder_args(mvc *sql, list *exps, list *names, list *params)
3286 : {
3287 3 : list *nexps = sa_list(sql->sa);
3288 8 : for(node *n = params->h; n; n = n->next) {
3289 5 : sql_arg *a = n->data;
3290 5 : int found =0;
3291 7 : for(node *m = names->h, *o = exps->h; m && o; m = m->next, o = o->next) {
3292 7 : if (strcmp(m->data, a->name) == 0) {
3293 5 : append(nexps, o->data);
3294 5 : found = 1;
3295 5 : break;
3296 : }
3297 : }
3298 5 : if (!found)
3299 : return NULL;
3300 : }
3301 : return nexps;
3302 : }
3303 :
3304 : static sql_exp *
3305 84771 : rel_nop(sql_query *query, sql_rel **rel, symbol *se, int fs, exp_kind ek)
3306 : {
3307 84771 : mvc *sql = query->sql;
3308 84771 : int nr_args = 0, err = 0;
3309 84771 : dnode *l = se->data.lval->h;
3310 84771 : dnode *ops = l->next->next->data.lval?l->next->next->data.lval->h:NULL;
3311 84771 : list *exps = sa_list(sql->sa), *tl = sa_list(sql->sa);
3312 84771 : exp_kind iek = {type_value, card_column, FALSE};
3313 84771 : char buf[ERRSIZE];
3314 84771 : int split = (l->type == type_int && l->data.i_val == -1);
3315 84771 : list *names = NULL;
3316 :
3317 3 : if (split)
3318 3 : names = sa_list(sql->sa);
3319 348682 : for (; ops; ops = ops->next, nr_args++) {
3320 263911 : if (!err) { /* we need the nr_args count at the end, but if an error is found, stop calling rel_value_exp */
3321 263889 : sql_exp *e = rel_value_exp(query, rel, ops->data.sym, fs|sql_farg, iek);
3322 263889 : if (!e) {
3323 6 : err = sql->session->status;
3324 6 : strcpy(buf, sql->errstr);
3325 6 : continue;
3326 : }
3327 263883 : if (split) {
3328 5 : ops = ops->next;
3329 5 : append(names, ops->data.sval);
3330 : }
3331 263883 : append(exps, e);
3332 263883 : append(tl, exp_subtype(e));
3333 : }
3334 : }
3335 84771 : if (l->type == type_int) {
3336 : /* exec nr (ops)*/
3337 5909 : int nr = l->data.i_val;
3338 5909 : cq *q = NULL;
3339 :
3340 5909 : if (err)
3341 : return NULL;
3342 5908 : if (nr == -1 || (q = qc_find(sql->qc, nr))) {
3343 5906 : list *nexps = new_exp_list(sql->sa);
3344 5906 : sql_func *f = q?q->f:inplace_func(sql);
3345 5906 : list *ops = q?f->ops:sql->params;
3346 :
3347 5906 : tl = sa_list(sql->sa);
3348 5906 : if (list_length(ops) != list_length(exps))
3349 3 : return sql_error(sql, 02, SQLSTATE(42000) "EXEC called with wrong number of arguments: expected %d, got %d", list_length(ops), list_length(exps));
3350 5903 : if (split) {
3351 3 : exps = reorder_args(sql, exps, names, ops);
3352 3 : if (!exps)
3353 0 : return sql_error(sql, 02, SQLSTATE(42000) "EXEC called with wrong arguments");
3354 : }
3355 5903 : if (exps->h && ops) {
3356 21927 : for (node *n = exps->h, *m = ops->h; n && m; n = n->next, m = m->next) {
3357 16115 : sql_arg *a = m->data;
3358 16115 : sql_exp *e = n->data;
3359 16115 : sql_subtype *ntp = &a->type;
3360 :
3361 16115 : if (ntp && ntp->type)
3362 16115 : e = exp_check_type(sql, ntp, NULL, e, type_equal);
3363 : else
3364 0 : a->type = *exp_subtype(e);
3365 16115 : if (!e) {
3366 1 : err = sql->session->status;
3367 1 : strcpy(buf, sql->errstr);
3368 1 : break;
3369 : }
3370 16114 : append(nexps, e);
3371 16114 : append(tl, exp_subtype(e));
3372 : }
3373 : }
3374 :
3375 5903 : if (err)
3376 : return NULL;
3377 5902 : if (q)
3378 5899 : sql->type = q->type;
3379 5992 : return exp_op(sql->sa, list_empty(nexps) ? NULL : nexps, sql_dup_subfunc(sql->sa, f, tl, NULL));
3380 : } else {
3381 2 : return sql_error(sql, 02, SQLSTATE(42000) "EXEC: PREPARED Statement missing '%d'", nr);
3382 : }
3383 : }
3384 78862 : char *fname = qname_schema_object(l->data.lval);
3385 78862 : char *sname = qname_schema(l->data.lval);
3386 :
3387 78862 : if (!sname && strcmp(fname, "field") == 0) { /* map into join */
3388 2 : if (err)
3389 2 : return NULL;
3390 1 : if (list_length(exps) < 2)
3391 1 : return sql_error(sql, 02, SQLSTATE(42000) "Field function called with not enough arguments");
3392 0 : sql_exp *le = exps->h->data;
3393 0 : set_freevar(le, 1);
3394 0 : list_remove_data(exps, NULL, le);
3395 0 : sql_exp *re = exp_values(sql->sa, exps);
3396 0 : exp_label(sql->sa, re, ++sql->label);
3397 0 : sql_rel *r = rel_project(sql->sa, NULL, append(sa_list(sql->sa), re));
3398 0 : sql_exp *id = NULL;
3399 0 : rel_add_identity(sql, r, &id);
3400 0 : re = exp_ref(sql, re);
3401 0 : id = exp_ref(sql, id);
3402 0 : if (r) {
3403 0 : r->nrcols = list_length(exps);
3404 0 : sql_exp *e = exp_compare(sql->sa, le, re, cmp_equal);
3405 0 : r = rel_select(sql->sa, r, e);
3406 0 : r = rel_project(sql->sa, r, append(sa_list(sql->sa), exp_convert(sql, id, exp_subtype(id), sql_bind_localtype("int"))));
3407 0 : re = exp_rel(sql, r);
3408 0 : return re;
3409 : }
3410 : }
3411 : /* first try aggregate */
3412 78860 : if (find_func(sql, sname, fname, nr_args, F_AGGR, false, NULL, NULL)) { /* We have to pass the arguments properly, so skip call to rel_aggr */
3413 : /* reset error */
3414 2 : sql->session->status = 0;
3415 2 : sql->errstr[0] = '\0';
3416 2 : return _rel_aggr(query, rel, l->next->data.i_val, sname, fname, l->next->next->data.lval->h, fs);
3417 : }
3418 78858 : if (err) {
3419 2 : sql->session->status = err;
3420 2 : strcpy(sql->errstr, buf);
3421 2 : return NULL;
3422 : }
3423 78856 : sql->session->status = 0; /* if the function was not found clean the error */
3424 78856 : sql->errstr[0] = '\0';
3425 78856 : return _rel_nop(sql, sname, fname, tl, rel ? *rel : NULL, exps, ek);
3426 : }
3427 :
3428 : typedef struct aggr_input {
3429 : sql_query *query;
3430 : int groupby;
3431 : char *err;
3432 : } aggr_input;
3433 :
3434 : static sql_exp *
3435 372 : exp_valid(visitor *v, sql_rel *rel, sql_exp *e, int depth)
3436 : {
3437 372 : aggr_input *ai = v->data;
3438 372 : (void)rel; (void)depth;
3439 :
3440 372 : int vf = is_freevar(e);
3441 372 : if (!v->changes && vf && vf < ai->groupby) { /* check need with outer query */
3442 14 : sql_rel *sq = query_fetch_outer(ai->query, vf-1);
3443 :
3444 : /* problem freevar have cardinality CARD_ATOM */
3445 14 : if (sq->card <= CARD_AGGR && exp_card(e) != CARD_AGGR && is_alias(e->type)) {
3446 4 : if (!exps_bind_column(sq->exps, e->l, e->r, NULL, 0)) {
3447 1 : v->changes = 1;
3448 1 : ai->err = SQLSTATE(42000) "SELECT: subquery uses ungrouped column from outer query";
3449 : }
3450 : }
3451 358 : } else if (!v->changes && vf && vf == ai->groupby) { /* check if input is already aggregated */
3452 279 : sql_rel *sq = query_fetch_outer(ai->query, vf-1);
3453 279 : sql_exp *a = NULL;
3454 :
3455 279 : if (sq->card <= CARD_AGGR && is_alias(e->type)) {
3456 187 : if ((a = exps_bind_column(sq->exps, e->l, e->r, NULL, 0)) && is_aggr(a->type)) { /* aggregate */
3457 9 : v->changes = 1;
3458 9 : ai->err = SQLSTATE(42000) "SELECT: aggregate function calls cannot be nested";
3459 : }
3460 : }
3461 : }
3462 372 : return e;
3463 : }
3464 :
3465 : static char *
3466 272 : exps_valid(sql_query *query, list *exps, int groupby)
3467 : {
3468 272 : aggr_input ai = { .query = query, .groupby = groupby };
3469 272 : visitor v = { .sql = query->sql, .data = &ai };
3470 :
3471 272 : exps_exp_visitor_topdown(&v, NULL, exps, 0, &exp_valid, true);
3472 272 : if (v.changes)
3473 10 : return ai.err;
3474 : return NULL;
3475 : }
3476 :
3477 : static sql_exp *
3478 41742 : _rel_aggr(sql_query *query, sql_rel **rel, int distinct, char *sname, char *aname, dnode *args, int f)
3479 : {
3480 41742 : mvc *sql = query->sql;
3481 41742 : exp_kind ek = {type_value, card_column, FALSE};
3482 41742 : sql_subfunc *a = NULL;
3483 41742 : int no_nil = 0, group = 0, all_aggr = query_has_outer(query), i;
3484 41742 : unsigned int all_freevar = 0;
3485 41742 : sql_rel *groupby = rel ? *rel : NULL, *sel = NULL, *gr, *og = NULL, *res = groupby;
3486 41742 : sql_rel *subquery = NULL;
3487 41742 : list *exps = NULL, *ungrouped_cols = NULL;
3488 41742 : bool is_grouping = !strcmp(aname, "grouping"), has_args = false, found = false, used_rel = false;
3489 :
3490 41742 : if (!all_aggr) {
3491 27513 : if (!groupby) {
3492 4 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3493 4 : return sql_error(sql, 02, SQLSTATE(42000) "%s: missing group by", toUpperCopy(uaname, aname));
3494 27509 : } else if (is_sql_groupby(f)) {
3495 8 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3496 8 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate function '%s' not allowed in GROUP BY clause", toUpperCopy(uaname, aname), aname);
3497 27501 : } else if (is_sql_values(f)) {
3498 1 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3499 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed on an unique value", toUpperCopy(uaname, aname));
3500 27500 : } else if (is_sql_join(f)) { /* the is_sql_join test must come before is_sql_where, because the join conditions are handled with sql_where */
3501 3 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3502 3 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in JOIN conditions", toUpperCopy(uaname, aname));
3503 27497 : } else if (is_sql_where(f)) {
3504 4 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3505 4 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in WHERE clause", toUpperCopy(uaname, aname));
3506 27493 : } else if (is_sql_update_set(f) || is_sql_psm(f)) {
3507 1 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3508 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in SET, WHILE, IF, ELSE, CASE, WHEN, RETURN, ANALYZE clauses (use subquery)", toUpperCopy(uaname, aname));
3509 27492 : } else if (is_sql_aggr(f)) {
3510 4 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3511 4 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions cannot be nested", toUpperCopy(uaname, aname));
3512 27488 : } else if (is_psm_call(f)) {
3513 0 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3514 0 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed inside CALL", toUpperCopy(uaname, aname));
3515 27488 : } else if (is_sql_from(f)) {
3516 0 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3517 0 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in functions in FROM", toUpperCopy(uaname, aname));
3518 : }
3519 : }
3520 :
3521 41717 : exps = sa_list(sql->sa);
3522 41717 : if (args && args->data.sym) {
3523 23106 : bool arguments_correlated = true, all_const = true;
3524 :
3525 23106 : all_freevar = all_aggr?1:0;
3526 50424 : for (i = 0; args && args->data.sym; args = args->next, i++) {
3527 27375 : int base = (!groupby || !is_project(groupby->op) || is_base(groupby->op) || is_processed(groupby));
3528 19508 : sql_rel *gl = base?groupby:groupby->l, *ogl = gl; /* handle case of subqueries without correlation */
3529 27375 : sql_exp *e = rel_value_exp(query, &gl, args->data.sym, (f | sql_aggr)& ~sql_farg, ek);
3530 27375 : bool found_one_freevar = false;
3531 :
3532 27375 : if (!e)
3533 57 : return NULL;
3534 27324 : used_rel |= (rel_has_exp(gl, e, true) == 0);
3535 27324 : has_args = true;
3536 27324 : if (gl && gl != ogl) {
3537 5 : if (gl->grouped) {
3538 5 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3539 5 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions cannot be nested", toUpperCopy(uaname, aname));
3540 : }
3541 0 : if (!base)
3542 0 : groupby->l = subquery = gl;
3543 : else
3544 : groupby = subquery = gl;
3545 : }
3546 27319 : sql_subtype *t = exp_subtype(e);
3547 27319 : if (!t) { /* we also do not expect parameters here */
3548 1 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3549 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: parameters not allowed as arguments to aggregate functions", toUpperCopy(uaname, aname));
3550 : }
3551 27318 : if (!t->type->localtype) {
3552 47 : if (e->type == e_atom && !e->f) {
3553 44 : t = sql_bind_localtype("bte");
3554 44 : e->tpe = *t;
3555 44 : if (e->l)
3556 44 : e->l = atom_set_type(sql->sa, e->l, t);
3557 : }
3558 : }
3559 :
3560 27318 : all_aggr &= (exp_card(e) <= CARD_AGGR && !exp_is_atom(e) && is_aggr(e->type) && !is_func(e->type) && (!groupby || !is_groupby(groupby->op) || !groupby->r || !exps_find_exp(groupby->r, e)));
3561 27318 : exp_only_freevar(query, e, &arguments_correlated, &found_one_freevar, &ungrouped_cols);
3562 27318 : all_freevar &= (arguments_correlated && found_one_freevar) || (is_atom(e->type)?all_freevar:0); /* no uncorrelated variables must be found, plus at least one correlated variable to push this aggregate to an outer query */
3563 27318 : all_const &= is_atom(e->type);
3564 27318 : list_append(exps, e);
3565 : }
3566 23049 : if (all_const)
3567 203 : all_freevar = 0;
3568 : }
3569 41660 : if (!all_freevar) {
3570 41368 : if (is_sql_groupby(f)) {
3571 1 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3572 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate function '%s' not allowed in GROUP BY clause", toUpperCopy(uaname, aname), aname);
3573 41367 : } else if (is_sql_from(f)) {
3574 2 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3575 2 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in functions in FROM", toUpperCopy(uaname, aname));
3576 41365 : } else if (is_sql_aggr(f) && groupby->grouped) {
3577 2 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3578 2 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions cannot be nested", toUpperCopy(uaname, aname));
3579 41363 : } else if (is_sql_values(f)) {
3580 1 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3581 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed on an unique value", toUpperCopy(uaname, aname));
3582 41362 : } else if (is_sql_join(f)) { /* the is_sql_join test must come before is_sql_where, because the join conditions are handled with sql_where */
3583 1 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3584 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in JOIN conditions", toUpperCopy(uaname, aname));
3585 41361 : } else if (is_sql_where(f)) {
3586 5 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3587 5 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in WHERE clause", toUpperCopy(uaname, aname));
3588 41356 : } else if (!all_aggr && !list_empty(ungrouped_cols)) {
3589 123 : for (node *n = ungrouped_cols->h ; n ; n = n->next) {
3590 66 : sql_rel *outer;
3591 66 : sql_exp *e = (sql_exp*) n->data;
3592 :
3593 66 : if ((outer = query_fetch_outer(query, is_freevar(e)-1))) {
3594 66 : int of = query_fetch_outer_state(query, is_freevar(e)-1);
3595 66 : if (outer->grouped) {
3596 24 : bool err = false, was_processed = false;
3597 :
3598 24 : if (is_processed(outer)) {
3599 5 : was_processed = true;
3600 5 : reset_processed(outer);
3601 : }
3602 24 : if (!is_groupby_col(outer, e))
3603 3 : err = true;
3604 24 : if (was_processed)
3605 5 : set_processed(outer);
3606 24 : if (err) {
3607 3 : if (exp_name(e) && exp_relname(e) && !has_label(e))
3608 3 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column \"%s.%s\" from outer query", exp_relname(e), exp_name(e));
3609 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column from outer query");
3610 : }
3611 42 : } else if (!used_rel && is_sql_where(of)) {
3612 2 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3613 2 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions not allowed in WHERE clause", toUpperCopy(uaname, aname));
3614 40 : } else if (!is_sql_aggr(of)) {
3615 36 : set_outer(outer);
3616 : }
3617 : }
3618 : }
3619 : }
3620 : }
3621 :
3622 41643 : if (all_freevar) { /* case 2, ie use outer */
3623 292 : int card;
3624 292 : sql_exp *exp = NULL;
3625 : /* find proper groupby relation */
3626 591 : for (node *n = exps->h; n; n = n->next) {
3627 299 : sql_exp *e = n->data;
3628 :
3629 299 : int vf = exp_freevar_offset(sql, e);
3630 299 : if (vf > (int)all_freevar)
3631 23 : all_freevar = vf;
3632 299 : exp = e;
3633 : }
3634 292 : if (query_has_outer(query) >= all_freevar) {
3635 292 : int sql_state = query_fetch_outer_state(query,all_freevar-1);
3636 292 : res = groupby = query_fetch_outer(query, all_freevar-1);
3637 292 : card = query_outer_used_card(query, all_freevar-1);
3638 : /* given groupby validate all input expressions */
3639 292 : char *err;
3640 292 : if (groupby && !is_groupby(groupby->op)) {
3641 111 : sql_exp *p = query_outer_last_used(query, all_freevar-1);
3642 111 : if (p && !is_aggr(p->type) && !is_groupby_col(groupby, p)) {
3643 20 : if (p->type == e_column)
3644 20 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", (char*)p->l, (char*)p->r);
3645 0 : if (exp_name(p) && exp_relname(p) && !has_label(p))
3646 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", exp_relname(p), exp_name(p));
3647 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
3648 : }
3649 : }
3650 272 : if ((err = exps_valid(query, exps, all_freevar)) != NULL) {
3651 10 : strcpy(sql->errstr, err);
3652 10 : sql->session->status = -ERR_GROUPBY;
3653 10 : return NULL;
3654 : }
3655 262 : if (exp && !is_groupby_col(res, exp)) {
3656 191 : if (is_sql_groupby(sql_state))
3657 2 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate function '%s' not allowed in GROUP BY clause", aname);
3658 189 : if (is_sql_aggr(sql_state) && groupby->grouped) {
3659 3 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3660 3 : return sql_error(sql, 02, SQLSTATE(42000) "%s: aggregate functions cannot be nested", toUpperCopy(uaname, aname));
3661 : }
3662 186 : if (is_sql_values(sql_state))
3663 0 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed on an unique value");
3664 186 : if (is_sql_update_set(sql_state) || is_sql_psm(f))
3665 2 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed in SET, WHILE, IF, ELSE, CASE, WHEN, RETURN, ANALYZE clauses");
3666 184 : if (is_sql_join(sql_state))
3667 4 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed in JOIN conditions");
3668 180 : if (is_sql_where(sql_state))
3669 3 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed in WHERE clause");
3670 177 : if (is_psm_call(sql_state))
3671 0 : return sql_error(sql, 05, SQLSTATE(42000) "CALL: aggregate functions not allowed inside CALL");
3672 177 : if (is_sql_from(sql_state))
3673 0 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed in functions in FROM");
3674 177 : if (card > CARD_AGGR) { /* used an expression before on the non grouped relation */
3675 0 : sql_exp *lu = query_outer_last_used(query, all_freevar-1);
3676 0 : if (lu->type == e_column)
3677 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column \"%s.%s\" from outer query", (char*)lu->l, (char*)lu->r);
3678 0 : if (exp_name(lu) && exp_relname(lu) && !has_label(lu))
3679 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column \"%s.%s\" from outer query", exp_relname(lu), exp_name(lu));
3680 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column from outer query");
3681 : }
3682 177 : if (is_outer(groupby))
3683 2 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column from outer query");
3684 : }
3685 : } else {
3686 : all_freevar = 0;
3687 : }
3688 41351 : } else if (!subquery && groupby && is_outer(groupby) && !is_groupby(groupby->op))
3689 1 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: subquery uses ungrouped column from outer query");
3690 :
3691 : /* find having select */
3692 41596 : if (!subquery && groupby && !is_processed(groupby) && is_sql_having(f)) {
3693 104 : og = groupby;
3694 104 : while(!is_processed(groupby) && !is_base(groupby->op)) {
3695 59 : if (is_select(groupby->op) || !groupby->l)
3696 : break;
3697 : if (groupby->l)
3698 : groupby = groupby->l;
3699 : }
3700 63 : if (groupby && is_select(groupby->op) && !is_processed(groupby)) {
3701 18 : group = 1;
3702 18 : sel = groupby;
3703 : /* At the end we switch back to the old projection relation og.
3704 : * During the partitioning and ordering we add the expressions to the intermediate relations. */
3705 : }
3706 18 : if (!sel)
3707 : groupby = og;
3708 18 : if (sel && sel->l)
3709 18 : groupby = sel->l;
3710 : }
3711 :
3712 : /* find groupby */
3713 41596 : if (!subquery && groupby && !is_processed(groupby) && !is_base(groupby->op)) {
3714 27374 : og = groupby;
3715 27374 : groupby = rel_find_groupby(groupby);
3716 27374 : if (groupby)
3717 : group = 1;
3718 : else
3719 : groupby = og;
3720 : }
3721 :
3722 7790 : if (!groupby && exps_card(exps) > CARD_ATOM) {
3723 0 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3724 0 : return sql_error(sql, 02, SQLSTATE(42000) "%s: missing group by", toUpperCopy(uaname, aname));
3725 : }
3726 :
3727 41596 : if (!subquery && groupby && groupby->op != op_groupby) { /* implicit groupby */
3728 20282 : if (!all_freevar && query->last_exp && !is_sql_aggr(query->last_state)) {
3729 9 : if (exp_relname(query->last_exp) && exp_name(query->last_exp) && !has_label(query->last_exp))
3730 9 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s.%s' in query results without an aggregate function", exp_relname(query->last_exp), exp_name(query->last_exp));
3731 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
3732 : }
3733 20273 : res = groupby = rel_groupby(sql, groupby, NULL);
3734 : }
3735 41587 : if (subquery) {
3736 0 : assert(!all_freevar);
3737 0 : res = groupby;
3738 0 : if (is_sql_sel(f) && is_left(subquery->op) && !is_groupby(groupby->op)) {
3739 0 : res = groupby = rel_groupby(sql, groupby, NULL);
3740 0 : exps_set_freevar(sql, exps, groupby); /* mark free variables */
3741 0 : } else if (!is_groupby(groupby->op)) {
3742 0 : res = groupby = rel_groupby(sql, groupby, NULL);
3743 : }
3744 0 : assert(!is_base(groupby->op));
3745 : }
3746 41587 : if ((!exps || exps_card(exps) > CARD_ATOM) && (!res || !groupby))
3747 : return NULL;
3748 :
3749 41587 : if (all_freevar) {
3750 246 : query_update_outer(query, res, all_freevar-1);
3751 41341 : } else if (rel) {
3752 41341 : *rel = res;
3753 41341 : if (query->last_rel != res) {
3754 37410 : query->last_rel = res;
3755 37410 : query->last_state |= sql_aggr;
3756 : }
3757 : }
3758 :
3759 41587 : if (!has_args) { /* count(*) case */
3760 18607 : sql_exp *e;
3761 :
3762 18607 : if (strcmp(aname, "count") != 0) {
3763 2 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3764 2 : return sql_error(sql, 02, SQLSTATE(42000) "%s: unable to perform '%s(*)'", toUpperCopy(uaname, aname), aname);
3765 : }
3766 18605 : a = sql_bind_func(sql, "sys", aname, sql_bind_localtype("void"), NULL, F_AGGR, true, true);
3767 18605 : e = exp_aggr(sql->sa, NULL, a, distinct, 0, groupby?groupby->card:CARD_ATOM, 0);
3768 :
3769 18605 : if (!groupby)
3770 : return e;
3771 18605 : if (all_freevar)
3772 0 : query_outer_used_exp(query, all_freevar-1, e, sql_aggr);
3773 18605 : e = rel_groupby_add_aggr(sql, groupby, e);
3774 18605 : if (!group && !all_freevar)
3775 : return e;
3776 3203 : if (all_freevar) {
3777 0 : assert(!is_simple_project(res->op));
3778 0 : e->card = CARD_ATOM;
3779 0 : set_freevar(e, all_freevar-1);
3780 0 : return e;
3781 : }
3782 : return e;
3783 : }
3784 :
3785 : /* use cnt as nils shouldn't be counted */
3786 22980 : no_nil = 1;
3787 :
3788 22980 : gr = groupby;
3789 22980 : if (gr && gr->op == op_project && gr->l)
3790 : gr = gr->l;
3791 :
3792 22980 : if (is_grouping) {
3793 109 : sql_subtype *tpe;
3794 109 : list *l = (list*) groupby->r;
3795 :
3796 109 : if (list_length(l) <= 7)
3797 107 : tpe = sql_bind_localtype("bte");
3798 2 : else if (list_length(l) <= 15)
3799 2 : tpe = sql_bind_localtype("sht");
3800 0 : else if (list_length(l) <= 31)
3801 0 : tpe = sql_bind_localtype("int");
3802 0 : else if (list_length(l) <= 63)
3803 0 : tpe = sql_bind_localtype("lng");
3804 : #ifdef HAVE_HGE
3805 0 : else if (list_length(l) <= 127)
3806 0 : tpe = sql_bind_localtype("hge");
3807 : #endif
3808 : else
3809 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: GROUPING the number of grouping columns is larger"
3810 : " than the maximum number of representable bits from this server (%d > %d)", list_length(l),
3811 : #ifdef HAVE_HGE
3812 : 127
3813 : #else
3814 : 63
3815 : #endif
3816 : );
3817 109 : a = sql_bind_func_result(sql, sname, aname, F_AGGR, true, tpe, 1, exp_subtype(exps->h->data));
3818 : } else
3819 22871 : a = sql_bind_func_(sql, sname, aname, exp_types(sql->sa, exps), F_AGGR, false, false);
3820 :
3821 22980 : if (a) {
3822 22975 : found = true;
3823 22975 : if (!execute_priv(sql, a->func))
3824 0 : a = NULL;
3825 22975 : if (!is_grouping && a && !(exps = check_arguments_and_find_largest_any_type(sql, rel ? *rel : NULL, exps, a, 0, false)))
3826 0 : a = NULL;
3827 : }
3828 :
3829 22980 : if (a) {
3830 22975 : bool hasnil = have_nil(exps) || (strcmp(aname, "count") != 0 && (!groupby || list_empty(groupby->r))); /* for global case, the aggregate may return NULL */
3831 22975 : sql_exp *e = exp_aggr(sql->sa, exps, a, distinct, no_nil, groupby?groupby->card:CARD_ATOM, hasnil);
3832 :
3833 22975 : if (!groupby)
3834 : return e;
3835 22975 : if (all_freevar)
3836 246 : query_outer_aggregated(query, all_freevar-1, e);
3837 22975 : e = rel_groupby_add_aggr(sql, groupby, e);
3838 22975 : if (!group && !all_freevar)
3839 : return e;
3840 16494 : if (all_freevar) {
3841 246 : rel_bind_vars(sql, groupby->l, exps);
3842 246 : assert(!is_simple_project(res->op));
3843 246 : e->card = CARD_ATOM;
3844 246 : set_freevar(e, all_freevar-1);
3845 246 : return e;
3846 : }
3847 : return e;
3848 : }
3849 5 : const char *type = "unknown";
3850 5 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
3851 :
3852 5 : if (!list_empty(exps)) {
3853 5 : sql_exp *e = exps->h->data;
3854 5 : type = exp_subtype(e)->type->base.name;
3855 : }
3856 15 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "%s: %s aggregate %s%s%s'%s'(%s)", toUpperCopy(uaname, aname), found ? "insufficient privileges for" : "no such",
3857 : sname ? "'":"", sname ? sname : "", sname ? "'.":"", aname, type);
3858 : }
3859 :
3860 : static sql_exp *
3861 41740 : rel_aggr(sql_query *query, sql_rel **rel, symbol *se, int f)
3862 : {
3863 41740 : dlist *l = se->data.lval;
3864 41740 : dnode *d = l->h->next->next;
3865 41740 : int distinct = l->h->next->data.i_val;
3866 41740 : char *aname = qname_schema_object(l->h->data.lval);
3867 41740 : char *sname = qname_schema(l->h->data.lval);
3868 :
3869 41740 : return _rel_aggr(query, rel, distinct, sname, aname, d, f);
3870 : }
3871 :
3872 : static sql_exp *
3873 100733 : rel_case(sql_query *query, sql_rel **rel, symbol *opt_cond, dlist *when_search_list, symbol *opt_else, int f)
3874 : {
3875 100733 : mvc *sql = query->sql;
3876 100733 : sql_subtype *tpe = NULL;
3877 100733 : list *conds = new_exp_list(sql->sa), *results = new_exp_list(sql->sa);
3878 100733 : sql_subtype *restype = NULL, *condtype = NULL, ctype, rtype, bt;
3879 100733 : sql_exp *res = NULL, *opt_cond_exp = NULL;
3880 100733 : exp_kind ek = {type_value, card_column, FALSE};
3881 :
3882 100733 : if (opt_cond) {
3883 9436 : if (!(opt_cond_exp = rel_value_exp(query, rel, opt_cond, f, ek)))
3884 : return NULL;
3885 9435 : condtype = exp_subtype(opt_cond_exp);
3886 : }
3887 :
3888 248521 : for (dnode *dn = when_search_list->h; dn; dn = dn->next) {
3889 147798 : sql_exp *cond = NULL, *result = NULL;
3890 147798 : dlist *when = dn->data.sym->data.lval;
3891 :
3892 147798 : if (opt_cond)
3893 45602 : cond = rel_value_exp(query, rel, when->h->data.sym, f, ek);
3894 : else
3895 102196 : cond = rel_logical_value_exp(query, rel, when->h->data.sym, f, ek);
3896 147798 : if (!cond)
3897 : return NULL;
3898 147792 : append(conds, cond);
3899 147792 : tpe = exp_subtype(cond);
3900 147792 : if (tpe && condtype) {
3901 56495 : result_datatype(&ctype, condtype, tpe);
3902 56495 : condtype = &ctype;
3903 91297 : } else if (tpe) {
3904 91295 : condtype = tpe;
3905 : }
3906 :
3907 147792 : if (!(result = rel_value_exp(query, rel, when->h->next->data.sym, f, ek)))
3908 : return NULL;
3909 147789 : append(results, result);
3910 147789 : tpe = exp_subtype(result);
3911 147789 : if (tpe && restype) {
3912 47063 : result_datatype(&rtype, restype, tpe);
3913 47063 : restype = &rtype;
3914 100726 : } else if (tpe) {
3915 100720 : restype = tpe;
3916 : }
3917 : }
3918 100723 : if (opt_else) {
3919 98153 : if (!(res = rel_value_exp(query, rel, opt_else, f, ek)))
3920 : return NULL;
3921 :
3922 98153 : tpe = exp_subtype(res);
3923 98153 : if (tpe && restype) {
3924 98148 : result_datatype(&rtype, restype, tpe);
3925 98148 : restype = &rtype;
3926 5 : } else if (tpe) {
3927 : restype = tpe;
3928 : }
3929 :
3930 98151 : if (!restype)
3931 2 : return sql_error(sql, 02, SQLSTATE(42000) "Result type missing");
3932 98151 : if (restype->type->localtype == TYPE_void) /* NULL */
3933 0 : restype = sql_bind_localtype("str");
3934 :
3935 98151 : if (!(res = exp_check_type(sql, restype, rel ? *rel : NULL, res, type_equal)))
3936 : return NULL;
3937 : } else {
3938 2570 : if (!restype)
3939 0 : return sql_error(sql, 02, SQLSTATE(42000) "Result type missing");
3940 2570 : if (restype->type->localtype == TYPE_void) /* NULL */
3941 7 : restype = sql_bind_localtype("str");
3942 2570 : res = exp_null(sql->sa, restype);
3943 : }
3944 :
3945 100721 : if (!condtype)
3946 0 : return sql_error(sql, 02, SQLSTATE(42000) "Condition type missing");
3947 100721 : if (condtype->type->localtype == TYPE_void) /* NULL */
3948 0 : condtype = sql_bind_localtype("str");
3949 100721 : if (opt_cond_exp && !(opt_cond_exp = exp_check_type(sql, condtype, rel ? *rel : NULL, opt_cond_exp, type_equal)))
3950 : return NULL;
3951 100721 : sql_find_subtype(&bt, "boolean", 0, 0);
3952 100721 : list *args = sa_list(sql->sa);
3953 100721 : if (opt_cond_exp)
3954 9429 : append(args, opt_cond_exp);
3955 248503 : for (node *n = conds->h, *m = results->h; n && m; n = n->next, m = m->next) {
3956 147783 : sql_exp *cond = n->data;
3957 147783 : sql_exp *result = m->data;
3958 :
3959 147783 : if (!(result = exp_check_type(sql, restype, rel ? *rel : NULL, result, type_equal)))
3960 : return NULL;
3961 :
3962 147783 : if (!(cond = exp_check_type(sql, condtype, rel ? *rel : NULL, cond, type_equal)))
3963 : return NULL;
3964 147782 : if (!opt_cond_exp && !(cond = exp_check_type(sql, &bt, rel ? *rel : NULL, cond, type_equal)))
3965 : return NULL;
3966 147782 : append(args, cond);
3967 147782 : append(args, result);
3968 : }
3969 100720 : assert(res);
3970 100720 : list_append(args, res);
3971 100720 : list *types = sa_list(sql->sa);
3972 100720 : types = append(append(types, restype), restype);
3973 192012 : sql_subfunc *case_func = find_func(sql, NULL, opt_cond_exp?"casewhen":"case", list_length(types), F_FUNC, true, NULL, NULL);
3974 100720 : res = exp_op(sql->sa, args, case_func);
3975 100720 : ((sql_subfunc*)res->f)->res->h->data = sql_create_subtype(sql->sa, restype->type, restype->digits, restype->scale);
3976 100720 : return res;
3977 : }
3978 :
3979 : static sql_exp *
3980 3838 : rel_complex_case(sql_query *query, sql_rel **rel, dlist *case_args, int f, str func)
3981 : {
3982 3838 : exp_kind ek = {type_value, card_column, FALSE};
3983 3838 : list *args = sa_list(query->sql->sa);
3984 3838 : sql_subtype *restype = NULL, rtype;
3985 3838 : sql_exp *res;
3986 :
3987 : /* generate nested func calls */
3988 11970 : for(dnode *dn = case_args->h; dn; dn = dn->next) {
3989 8145 : sql_exp *a = rel_value_exp(query, rel, dn->data.sym, f, ek);
3990 8145 : if (!a)
3991 : return NULL;
3992 8132 : append(args, a);
3993 : /* all arguments should have the same type */
3994 8132 : sql_subtype *tpe = exp_subtype(a);
3995 8132 : if (tpe && restype) {
3996 4296 : result_datatype(&rtype, restype, tpe);
3997 4296 : restype = &rtype;
3998 3836 : } else if (tpe) {
3999 3836 : restype = tpe;
4000 : }
4001 : }
4002 3825 : if (!restype)
4003 0 : return sql_error(query->sql, 02, SQLSTATE(42000) "Result type missing");
4004 3825 : if (restype->type->localtype == TYPE_void) /* NULL */
4005 0 : restype = sql_bind_localtype("str");
4006 3825 : list *nargs = sa_list(query->sql->sa);
4007 11942 : for (node *m = args->h; m; m = m->next) {
4008 8117 : sql_exp *result = m->data;
4009 :
4010 8117 : if (!(result = exp_check_type(query->sql, restype, rel ? *rel : NULL, result, type_equal)))
4011 : return NULL;
4012 8117 : append(nargs, result);
4013 : }
4014 3825 : list *types = append(append(sa_list(query->sql->sa), restype), restype);
4015 3825 : sql_subfunc *fnc = find_func(query->sql, NULL, func, list_length(types), F_FUNC, true, NULL, NULL);
4016 3825 : res = exp_op(query->sql->sa, nargs, fnc);
4017 3825 : ((sql_subfunc*)res->f)->res->h->data = sql_create_subtype(query->sql->sa, restype->type, restype->digits, restype->scale);
4018 3825 : return res;
4019 : }
4020 :
4021 : static sql_exp *
4022 104571 : rel_case_exp(sql_query *query, sql_rel **rel, symbol *se, int f)
4023 : {
4024 104571 : dlist *l = se->data.lval;
4025 :
4026 104571 : if (se->token == SQL_COALESCE) {
4027 3687 : return rel_complex_case(query, rel, l, f | sql_farg, "coalesce");
4028 100884 : } else if (se->token == SQL_NULLIF) {
4029 151 : return rel_complex_case(query, rel, l, f | sql_farg, "nullif");
4030 100733 : } else if (l->h->type == type_list) {
4031 91297 : dlist *when_search_list = l->h->data.lval;
4032 91297 : symbol *opt_else = l->h->next->data.sym;
4033 :
4034 91297 : return rel_case(query, rel, NULL, when_search_list, opt_else, f | sql_farg);
4035 : } else {
4036 9436 : symbol *scalar_exp = l->h->data.sym;
4037 9436 : dlist *when_value_list = l->h->next->data.lval;
4038 9436 : symbol *opt_else = l->h->next->next->data.sym;
4039 :
4040 9436 : return rel_case(query, rel, scalar_exp, when_value_list, opt_else, f | sql_farg);
4041 : }
4042 : }
4043 :
4044 : #define E_ATOM_STRING(e) ((atom*)(e)->l)->data.val.sval
4045 :
4046 : static sql_exp *
4047 169087 : rel_cast(sql_query *query, sql_rel **rel, symbol *se, int f)
4048 : {
4049 169087 : mvc *sql = query->sql;
4050 169087 : dlist *dl = se->data.lval;
4051 169087 : symbol *s = dl->h->data.sym;
4052 169087 : sql_subtype *tpe = &dl->h->next->data.typeval;
4053 169087 : exp_kind ek = {type_value, card_column, FALSE};
4054 169087 : sql_exp *e = rel_value_exp(query, rel, s, f|sql_farg, ek);
4055 :
4056 169087 : if (!e)
4057 : return NULL;
4058 :
4059 : /* strings may need to be truncated */
4060 169072 : if (EC_VARCHAR(tpe->type->eclass) && tpe->digits > 0) {
4061 82568 : sql_subtype *et = exp_subtype(e);
4062 : /* truncate only if the number of digits are smaller or from clob */
4063 82568 : if (et && EC_VARCHAR(et->type->eclass) && (tpe->digits < et->digits || et->digits == 0)) {
4064 2870 : sql_subfunc *c = sql_bind_func(sql, "sys", "truncate", et, sql_bind_localtype("int"), F_FUNC, true, true);
4065 2870 : if (c)
4066 2870 : e = exp_binop(sql->sa, e, exp_atom_int(sql->sa, tpe->digits), c);
4067 : }
4068 : }
4069 :
4070 169072 : if (tpe->type->eclass == EC_DEC) {
4071 447 : sql_subtype *et = exp_subtype(e);
4072 447 : if (e->type == e_atom && !tpe->digits) {
4073 9 : if (et->type->eclass == EC_NUM || et->type->eclass == EC_DEC) {
4074 6 : tpe->digits = atom_num_digits(e->l);
4075 6 : tpe = sql_bind_subtype(sql->sa, "decimal", tpe->digits, et->scale);
4076 3 : } else if (EC_VARCHAR(et->type->eclass)) {
4077 2 : char *s = E_ATOM_STRING(e);
4078 2 : unsigned int min_precision = 0, min_scale = 0;
4079 2 : bool dot_seen = false;
4080 16 : for (size_t i = 0; i < strlen(s); i++) {
4081 14 : if (isdigit(s[i])) {
4082 12 : min_precision++;
4083 12 : if (dot_seen)
4084 10 : min_scale++;
4085 2 : } else if (s[i] == '.') {
4086 2 : dot_seen = true;
4087 : }
4088 : }
4089 2 : tpe = sql_bind_subtype(sql->sa, "decimal", min_precision, min_scale);
4090 : } else { /* fallback */
4091 1 : tpe = sql_bind_subtype(sql->sa, "decimal", 18, 3);
4092 : }
4093 438 : } else if (!tpe->digits && !tpe->scale) {
4094 105 : if (et->type->eclass == EC_NUM)
4095 36 : tpe = sql_bind_subtype(sql->sa, "decimal", et->digits, 0);
4096 : else /* fallback */
4097 69 : tpe = sql_bind_subtype(sql->sa, "decimal", 18, 3);
4098 : }
4099 : }
4100 :
4101 169072 : if (e)
4102 169072 : e = exp_check_type(sql, tpe, rel ? *rel : NULL, e, type_cast);
4103 :
4104 169072 : if (e && e->type == e_convert)
4105 48063 : exp_label(sql->sa, e, ++sql->label);
4106 :
4107 : return e;
4108 : }
4109 :
4110 : static sql_exp *
4111 1590 : rel_next_value_for( mvc *sql, symbol *se )
4112 : {
4113 1590 : char *sname = qname_schema(se->data.lval);
4114 1590 : char *seqname = qname_schema_object(se->data.lval);
4115 1590 : sql_sequence *seq = NULL;
4116 1590 : sql_subtype t;
4117 1590 : sql_subfunc *f;
4118 :
4119 1590 : if (!sname)
4120 225 : sname = "sys";
4121 1590 : if (!stack_find_rel_view(sql, seqname)) {
4122 1389 : if (!(seq = find_sequence_on_scope(sql, sname, seqname, "NEXT VALUE FOR")))
4123 : return NULL;
4124 1387 : if (!mvc_schema_privs(sql, seq->s))
4125 0 : return sql_error(sql, 02, SQLSTATE(42000) "NEXT VALUE FOR: access denied for %s to schema '%s'", get_string_global_var(sql, "current_user"), seq->s->base.name);
4126 : }
4127 1588 : sql_find_subtype(&t, "varchar", 0, 0);
4128 1588 : f = sql_bind_func(sql, "sys", "next_value_for", &t, &t, F_FUNC, true, true);
4129 1588 : assert(f);
4130 : /* sequence found in the stack, ie just created. use given schema? */
4131 1588 : return exp_binop(sql->sa, exp_atom_str(sql->sa, seq && seq->s ? seq->s->base.name : sname, &t), exp_atom_str(sql->sa, seqname, &t), f);
4132 : }
4133 :
4134 : /* some users like to use aliases already in the groupby */
4135 : static sql_exp *
4136 165 : rel_selection_ref(sql_query *query, sql_rel **rel, char *name, dlist *selection)
4137 : {
4138 165 : allocator *sa = query->sql->sa;
4139 165 : dlist *nl;
4140 165 : exp_kind ek = {type_value, card_column, FALSE};
4141 165 : sql_exp *res = NULL;
4142 165 : symbol *nsym;
4143 :
4144 165 : if (!selection)
4145 : return NULL;
4146 :
4147 679 : for (dnode *n = selection->h; n; n = n->next) {
4148 : /* we only look for columns */
4149 517 : tokens to = n->data.sym->token;
4150 517 : if (to == SQL_COLUMN || to == SQL_IDENT) {
4151 515 : dlist *l = n->data.sym->data.lval;
4152 : /* AS name */
4153 515 : if (l->h->next->data.sval && strcmp(l->h->next->data.sval, name) == 0) {
4154 146 : sql_exp *ve = rel_value_exp(query, rel, l->h->data.sym, sql_sel|sql_groupby, ek);
4155 146 : if (ve) {
4156 145 : if (res)
4157 1 : return sql_error(query->sql, ERR_AMBIGUOUS, SQLSTATE(42000) "SELECT: identifier '%s' ambiguous", name);
4158 144 : res = ve;
4159 :
4160 144 : nl = dlist_create(sa);
4161 144 : exp_setname(query->sql, ve, NULL, name);
4162 : /* now we should rewrite the selection such that it uses the new group by column */
4163 144 : dlist_append_string(sa, nl, sa_strdup(sa, name));
4164 144 : nsym = symbol_create_list(sa, to, nl);
4165 144 : nl = dlist_create(sa);
4166 144 : dlist_append_symbol(sa, nl, nsym);
4167 : /* no alias */
4168 144 : dlist_append_symbol(sa, nl, NULL);
4169 144 : n->data.sym = symbol_create_list(sa, to, nl);
4170 : }
4171 : }
4172 : }
4173 : }
4174 : return res;
4175 : }
4176 :
4177 : static char*
4178 197 : symbol_get_identifier(symbol *sym)
4179 : {
4180 197 : dlist *syml;
4181 :
4182 197 : if (sym->token != SQL_COLUMN && sym->token != SQL_IDENT)
4183 : return NULL;
4184 182 : syml = sym->data.lval;
4185 182 : if (dlist_length(syml) > 1)
4186 : return NULL;
4187 :
4188 165 : return syml->h->data.sval;
4189 : }
4190 :
4191 : static sql_exp*
4192 23643 : rel_group_column(sql_query *query, sql_rel **rel, symbol *grp, dlist *selection, list *exps, int f)
4193 : {
4194 23643 : sql_query *lquery = query_create(query->sql);
4195 23643 : mvc *sql = query->sql;
4196 23643 : exp_kind ek = {type_value, card_value, TRUE};
4197 23643 : sql_exp *e = rel_value_exp2(lquery, rel, grp, f, ek);
4198 :
4199 23643 : if (e && exp_is_atom(e)) {
4200 34 : sql_subtype *tpe = exp_subtype(e);
4201 34 : if (!is_atom(e->type) ||!tpe || tpe->type->eclass != EC_NUM) {
4202 2 : if (!tpe)
4203 2 : return sql_error(sql, 02, SQLSTATE(42000) "Cannot have a parameter (?) for group by column");
4204 3 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: non-integer constant in GROUP BY");
4205 : }
4206 : }
4207 :
4208 192 : if (!e) {
4209 192 : char buf[ERRSIZE], *name;
4210 192 : int status = sql->session->status;
4211 192 : strcpy(buf, sql->errstr);
4212 : /* reset error */
4213 192 : sql->session->status = 0;
4214 192 : sql->errstr[0] = '\0';
4215 :
4216 192 : if ((name = symbol_get_identifier(grp))) {
4217 163 : e = rel_selection_ref(query, rel, name, selection);
4218 163 : if (!e) { /* attempt to find in the existing list of group by expressions */
4219 29 : for (node *n = exps->h ; n && !e ; n = n->next) {
4220 9 : sql_exp *ge = (sql_exp *) n->data;
4221 9 : const char *gen = exp_name(ge);
4222 :
4223 9 : if (gen && strcmp(name, gen) == 0)
4224 5 : e = exp_ref(sql, ge);
4225 : }
4226 : }
4227 : }
4228 49 : if (!e && query_has_outer(query)) {
4229 : /* reset error */
4230 32 : sql->session->status = 0;
4231 32 : sql->errstr[0] = '\0';
4232 32 : e = rel_value_exp2(query, rel, grp, f, ek);
4233 : }
4234 44 : if (!e) {
4235 13 : if (sql->errstr[0] == 0) {
4236 10 : sql->session->status = status;
4237 10 : strcpy(sql->errstr, buf);
4238 : }
4239 13 : return NULL;
4240 : }
4241 : }
4242 23625 : if (!exp_subtype(e))
4243 0 : return sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) for group by column");
4244 : return e;
4245 : }
4246 :
4247 : static list*
4248 44 : list_power_set(allocator *sa, list* input) /* cube */
4249 : {
4250 44 : list *res = sa_list(sa);
4251 : /* N stores total number of subsets */
4252 44 : int N = (int) pow(2, input->cnt);
4253 :
4254 : /* generate each subset one by one */
4255 266 : for (int i = 0; i < N; i++) {
4256 222 : list *ll = sa_list(sa);
4257 222 : int j = 0; /* check every bit of i */
4258 844 : for (node *n = input->h ; n ; n = n->next) {
4259 : /* if j'th bit of i is set, then append */
4260 622 : if (i & (1 << j))
4261 311 : list_prepend(ll, n->data);
4262 622 : j++;
4263 : }
4264 222 : list_prepend(res, ll);
4265 : }
4266 44 : return res;
4267 : }
4268 :
4269 : static list*
4270 61 : list_rollup(allocator *sa, list* input)
4271 : {
4272 61 : list *res = sa_list(sa);
4273 :
4274 188 : for (int counter = input->cnt; counter > 0; counter--) {
4275 127 : list *ll = sa_list(sa);
4276 127 : int j = 0;
4277 376 : for (node *n = input->h; n && j < counter; j++, n = n->next)
4278 249 : list_append(ll, n->data);
4279 127 : list_append(res, ll);
4280 : }
4281 61 : list_append(res, sa_list(sa)); /* global aggregate case */
4282 61 : return res;
4283 : }
4284 :
4285 : static int
4286 320 : list_equal(list* list1, list* list2)
4287 : {
4288 375 : for (node *n = list1->h; n ; n = n->next) {
4289 328 : sql_exp *e = (sql_exp*) n->data;
4290 328 : if (!exps_find_exp(list2, e))
4291 : return 1;
4292 : }
4293 78 : for (node *n = list2->h; n ; n = n->next) {
4294 47 : sql_exp *e = (sql_exp*) n->data;
4295 47 : if (!exps_find_exp(list1, e))
4296 : return 1;
4297 : }
4298 : return 0;
4299 : }
4300 :
4301 : static list*
4302 26 : lists_cartesian_product_and_distinct(allocator *sa, list *l1, list *l2)
4303 : {
4304 26 : list *res = sa_list(sa);
4305 :
4306 : /* for each list of l2, merge into each list of l1 while removing duplicates */
4307 116 : for (node *n = l1->h ; n ; n = n->next) {
4308 90 : list *sub_list = (list*) n->data;
4309 :
4310 279 : for (node *m = l2->h ; m ; m = m->next) {
4311 189 : list *other = (list*) m->data;
4312 189 : list_append(res, list_distinct(list_merge(list_dup(sub_list, (fdup) NULL), other, (fdup) NULL), (fcmp) list_equal, (fdup) NULL));
4313 : }
4314 : }
4315 26 : return res;
4316 : }
4317 :
4318 : static list*
4319 9802 : rel_groupings(sql_query *query, sql_rel **rel, symbol *groupby, dlist *selection, int f, bool grouping_sets, list **sets)
4320 : {
4321 9802 : mvc *sql = query->sql;
4322 9802 : list *exps = new_exp_list(sql->sa);
4323 :
4324 9802 : if (mvc_highwater(sql))
4325 0 : return sql_error(sql, 10, SQLSTATE(42000) "Query too complex: running out of stack space");
4326 :
4327 33353 : for (dnode *o = groupby->data.lval->h; o; o = o->next) {
4328 23570 : symbol *grouping = o->data.sym;
4329 23570 : list *next_set = NULL;
4330 :
4331 23570 : if (grouping->token == SQL_GROUPING_SETS) { /* call recursively, and merge the generated sets */
4332 39 : list *other = rel_groupings(query, rel, grouping, selection, f, true, &next_set);
4333 39 : if (!other)
4334 19 : return NULL;
4335 39 : exps = list_distinct(list_merge(exps, other, (fdup) NULL), (fcmp) exp_equal, (fdup) NULL);
4336 : } else {
4337 23531 : dlist *dl = grouping->data.lval;
4338 23531 : if (dl) {
4339 23505 : list *set_cols = new_exp_list(sql->sa); /* columns and combination of columns to be used for the next set */
4340 :
4341 47100 : for (dnode *oo = dl->h; oo; oo = oo->next) {
4342 23613 : symbol *grp = oo->data.sym;
4343 23613 : list *next_tuple = new_exp_list(sql->sa); /* next tuple of columns */
4344 :
4345 23613 : if (grp->token == SQL_COLUMN_GROUP) { /* set of columns */
4346 71 : assert(is_sql_group_totals(f));
4347 172 : for (dnode *ooo = grp->data.lval->h; ooo; ooo = ooo->next) {
4348 101 : symbol *elm = ooo->data.sym;
4349 101 : sql_exp *e = rel_group_column(query, rel, elm, selection, exps, f);
4350 101 : if (!e)
4351 : return NULL;
4352 101 : assert(e->type == e_column);
4353 101 : list_append(next_tuple, e);
4354 101 : list_append(exps, e);
4355 : }
4356 : } else { /* single column or expression */
4357 23542 : sql_exp *e = rel_group_column(query, rel, grp, selection, exps, f);
4358 23542 : if (!e)
4359 : return NULL;
4360 23524 : if (e->type != e_column && !exp_is_atom(e)) { /* store group by expressions in the stack */
4361 140 : if (is_sql_group_totals(f))
4362 0 : return sql_error(sql, 02, SQLSTATE(42000) "GROUP BY: grouping expressions not possible with ROLLUP, CUBE and GROUPING SETS");
4363 140 : if (!exp_has_rel(e) && !frame_push_groupby_expression(sql, grp, e))
4364 : return NULL;
4365 : }
4366 23524 : list_append(next_tuple, e);
4367 23524 : list_append(exps, e);
4368 : }
4369 23595 : list_append(set_cols, next_tuple);
4370 : }
4371 23487 : if (is_sql_group_totals(f)) {
4372 178 : if (grouping->token == SQL_ROLLUP)
4373 61 : next_set = list_rollup(sql->sa, set_cols);
4374 117 : else if (grouping->token == SQL_CUBE)
4375 44 : next_set = list_power_set(sql->sa, set_cols);
4376 : else /* the list of sets is not used in the "GROUP BY a, b, ..." case */
4377 73 : next_set = list_append(new_exp_list(sql->sa), set_cols);
4378 : }
4379 26 : } else if (is_sql_group_totals(f) && grouping_sets) /* The GROUP BY () case is the global aggregate which is always added by ROLLUP and CUBE */
4380 17 : next_set = list_append(new_exp_list(sql->sa), new_exp_list(sql->sa));
4381 : }
4382 23552 : if (is_sql_group_totals(f)) { /* if there are no sets, set the found one, otherwise calculate cartesian product and merge the distinct ones */
4383 235 : if (!next_set)
4384 1 : return sql_error(sql, 02, SQLSTATE(42000) "GROUP BY: GROUPING SETS is empty");
4385 234 : if (!*sets)
4386 157 : *sets = next_set;
4387 : else
4388 77 : *sets = grouping_sets ? list_merge(*sets, next_set, (fdup) NULL) : lists_cartesian_product_and_distinct(sql->sa, *sets, next_set);
4389 : }
4390 : }
4391 : return exps;
4392 : }
4393 :
4394 : static list*
4395 8208 : rel_partition_groupings(sql_query *query, sql_rel **rel, symbol *partitionby, dlist *selection, int f)
4396 : {
4397 8208 : mvc *sql = query->sql;
4398 8208 : dnode *o = partitionby->data.lval->h;
4399 8208 : list *exps = new_exp_list(sql->sa);
4400 :
4401 24651 : for (; o; o = o->next) {
4402 8243 : symbol *grp = o->data.sym;
4403 8243 : exp_kind ek = {type_value, card_value, TRUE};
4404 8243 : sql_exp *e = rel_value_exp2(query, rel, grp, f, ek);
4405 :
4406 8243 : if (!e) {
4407 5 : int status = sql->session->status;
4408 5 : char buf[ERRSIZE], *name;
4409 :
4410 : /* reset error */
4411 5 : sql->session->status = 0;
4412 5 : strcpy(buf, sql->errstr);
4413 5 : sql->errstr[0] = '\0';
4414 :
4415 5 : if ((name = symbol_get_identifier(grp))) {
4416 2 : e = rel_selection_ref(query, rel, name, selection);
4417 2 : if (!e) { /* attempt to find in the existing list of partition by expressions */
4418 3 : for (node *n = exps->h ; n ; n = n->next) {
4419 1 : sql_exp *ge = (sql_exp *) n->data;
4420 1 : const char *gen = exp_name(ge);
4421 :
4422 1 : if (gen && strcmp(name, gen) == 0) {
4423 0 : e = exp_ref(sql, ge);
4424 0 : break;
4425 : }
4426 : }
4427 : }
4428 : }
4429 5 : if (!e) {
4430 5 : if (sql->errstr[0] == 0) {
4431 5 : sql->session->status = status;
4432 5 : strcpy(sql->errstr, buf);
4433 : }
4434 5 : return NULL;
4435 : }
4436 : }
4437 :
4438 8238 : if (exp_has_rel(e))
4439 3 : return sql_error(sql, 02, SQLSTATE(42000) "PARTITION BY: subqueries not allowed in PARTITION BY clause");
4440 :
4441 8235 : if (e->type != e_column) { /* store group by expressions in the stack */
4442 36 : if (!frame_push_groupby_expression(sql, grp, e))
4443 : return NULL;
4444 : }
4445 :
4446 8235 : if (e->card > CARD_AGGR)
4447 8115 : e->card = CARD_AGGR;
4448 8235 : append(exps, e);
4449 : }
4450 : return exps;
4451 : }
4452 :
4453 : /* find selection expressions matching the order by column expression */
4454 : /* complex columns only */
4455 : static sql_exp *
4456 66963 : rel_order_by_column_exp(sql_query *query, sql_rel **R, symbol *column_r, int needs_distinct, int f)
4457 : {
4458 66963 : mvc *sql = query->sql;
4459 66963 : sql_rel *r = *R, *p = NULL;
4460 66963 : sql_exp *e = NULL, *found = NULL;
4461 66963 : exp_kind ek = {type_value, card_column, FALSE};
4462 :
4463 66963 : if (!r)
4464 : return e;
4465 :
4466 66963 : if (is_simple_project(r->op) && r->l && is_processed(r)) {
4467 66901 : p = r;
4468 66901 : r = r->l;
4469 : }
4470 :
4471 66963 : e = rel_value_exp(query, &r, column_r, f, ek);
4472 :
4473 66963 : if (r && !p)
4474 62 : *R = r;
4475 66901 : else if (r)
4476 66901 : p->l = r;
4477 66963 : if (e && p) {
4478 66874 : if (is_project(p->op) && (found = exps_any_match(p->exps, e))) { /* if one of the projections matches, return a reference to it */
4479 59401 : e = exp_ref(sql, found);
4480 : } else {
4481 7473 : if (needs_distinct)
4482 2 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: with DISTINCT ORDER BY expressions must appear in select list");
4483 7471 : e = rel_project_add_exp(sql, p, e);
4484 7471 : if (r) {
4485 121118 : for (node *n = p->exps->h ; n ; n = n->next) {
4486 113649 : sql_exp *ee = n->data;
4487 :
4488 113649 : if (ee->card > r->card) {
4489 2 : if (exp_name(ee) && !has_label(ee))
4490 2 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", exp_name(ee));
4491 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
4492 : }
4493 : }
4494 : }
4495 : }
4496 66870 : return e;
4497 : }
4498 89 : if (e && r && is_project(r->op)) {
4499 28 : sql_exp *found = exps_find_exp(r->exps, e);
4500 :
4501 28 : if (!found) {
4502 8 : if (needs_distinct)
4503 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: with DISTINCT ORDER BY expressions must appear in select list");
4504 8 : if (!is_simple_project(r->op) && !is_groupby(r->op))
4505 1 : *R = r = rel_project(sql->sa, r, rel_projections(sql, r, NULL, 1, 0));
4506 8 : append(r->exps, e);
4507 : } else {
4508 : e = found;
4509 : }
4510 28 : e = exp_ref(sql, e);
4511 : }
4512 : return e;
4513 : }
4514 :
4515 : static dlist *
4516 114752 : simple_selection(symbol *sq)
4517 : {
4518 114752 : if (sq->token == SQL_SELECT) {
4519 13 : SelectNode *sn;
4520 13 : sn = (SelectNode *) sq;
4521 :
4522 13 : if (!sn->from && !sn->where && !sn->distinct && !sn->window && dlist_length(sn->selection) == 1)
4523 7 : return sn->selection;
4524 : }
4525 : return NULL;
4526 : }
4527 :
4528 : static list *
4529 45517 : rel_order_by(sql_query *query, sql_rel **R, symbol *orderby, int needs_distinct, int f)
4530 : {
4531 45517 : mvc *sql = query->sql;
4532 45517 : sql_rel *rel = *R, *or = rel; /* the order by relation */
4533 45517 : list *exps = new_exp_list(sql->sa);
4534 :
4535 45517 : if (!orderby->data.lval) { /* by all */
4536 2 : if (is_sql_orderby(f)) {
4537 2 : assert(is_project(rel->op));
4538 6 : for(node *n = rel->exps->h; n; n = n->next) {
4539 4 : sql_exp *e = n->data;
4540 4 : append(exps, exp_ref(sql, e));
4541 : }
4542 : return exps;
4543 : }
4544 : return NULL;
4545 : }
4546 :
4547 45515 : dnode *o = orderby->data.lval->h;
4548 45515 : dlist *selection = NULL;
4549 :
4550 45515 : if (is_sql_orderby(f)) {
4551 36632 : assert(is_project(rel->op));
4552 36632 : rel = rel->l;
4553 : }
4554 :
4555 160220 : for (; o; o = o->next) {
4556 114752 : symbol *order = o->data.sym;
4557 :
4558 114752 : if (order->token == SQL_COLUMN || order->token == SQL_IDENT) {
4559 114752 : symbol *col = order->data.lval->h->data.sym;
4560 114752 : int direction = order->data.lval->h->next->data.i_val;
4561 114752 : sql_exp *e = NULL;
4562 :
4563 114752 : assert(order->data.lval->h->next->type == type_int);
4564 114752 : if ((selection = simple_selection(col)) != NULL) {
4565 7 : dnode *o = selection->h;
4566 7 : order = o->data.sym;
4567 7 : if (order->data.lval->h->type == type_symbol)
4568 6 : col = order->data.lval->h->data.sym;
4569 : /* remove optional name from selection */
4570 7 : order->data.lval->h->next = NULL;
4571 : }
4572 :
4573 114752 : if (col->token == SQL_COLUMN || col->token == SQL_IDENT || col->token == SQL_ATOM) {
4574 114530 : exp_kind ek = {type_value, card_column, FALSE};
4575 :
4576 114530 : e = rel_value_exp2(query, &rel, col, f, ek);
4577 :
4578 114530 : if (e && e->card <= CARD_ATOM) {
4579 9364 : sql_subtype *tpe = exp_subtype(e);
4580 : /* integer atom on the stack */
4581 9364 : if (!is_sql_window(f) && e->type == e_atom &&
4582 9256 : tpe->type->eclass == EC_NUM) {
4583 9247 : atom *a = e->l;
4584 9247 : int nr = (int)atom_get_int(a);
4585 :
4586 9247 : e = exps_get_exp(rel->exps, nr);
4587 9247 : if (!e)
4588 3 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: the order by column number (%d) is not in the number of projections range (%d)", nr, list_length(rel->exps));
4589 9244 : e = exp_ref(sql, e);
4590 : }
4591 38420 : } else if (e && exp_card(e) > rel->card) {
4592 0 : if (exp_name(e) && !has_label(e))
4593 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", exp_name(e));
4594 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
4595 : }
4596 114527 : if (e && !exp_name(e))
4597 23 : exp_label(sql->sa, e, ++sql->label);
4598 47781 : if (e && rel && is_project(rel->op)) {
4599 39365 : sql_exp *found = exps_find_exp(rel->exps, e);
4600 :
4601 39365 : if (!found) {
4602 33 : if (needs_distinct)
4603 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: with DISTINCT ORDER BY expressions must appear in select list");
4604 33 : if (!is_freevar(e))
4605 16 : append(rel->exps, e);
4606 : } else {
4607 : e = found;
4608 : }
4609 39365 : if (!is_freevar(e))
4610 39348 : e = exp_ref(sql, e);
4611 : }
4612 : }
4613 :
4614 114749 : if (rel && !e && sql->session->status != -ERR_AMBIGUOUS) {
4615 : /* reset error */
4616 66963 : sql->session->status = 0;
4617 66963 : sql->errstr[0] = '\0';
4618 :
4619 66963 : e = rel_order_by_column_exp(query, &rel, col, needs_distinct, sql_sel | sql_orderby | (f & sql_group_totals) | (f & sql_window));
4620 : }
4621 66968 : if (!e)
4622 : return NULL;
4623 114706 : if (!exp_subtype(e))
4624 1 : return sql_error(sql, 01, SQLSTATE(42000) "Cannot have a parameter (?) for order by column");
4625 114705 : set_direction(e, direction);
4626 114705 : list_append(exps, e);
4627 : } else {
4628 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: order not of type SQL_COLUMN");
4629 : }
4630 : }
4631 45468 : if (is_sql_orderby(f) && or != rel)
4632 36592 : or->l = rel;
4633 45468 : if (is_sql_window(f))
4634 8876 : *R = rel;
4635 : return exps;
4636 : }
4637 :
4638 : static int
4639 814 : generate_window_bound(tokens sql_token, bool first_half)
4640 : {
4641 814 : switch (sql_token) {
4642 408 : case SQL_PRECEDING:
4643 408 : return first_half ? BOUND_FIRST_HALF_PRECEDING : BOUND_SECOND_HALF_PRECEDING;
4644 284 : case SQL_FOLLOWING:
4645 284 : return first_half ? BOUND_FIRST_HALF_FOLLOWING : BOUND_SECOND_HALF_FOLLOWING;
4646 122 : case SQL_CURRENT_ROW:
4647 122 : return first_half ? CURRENT_ROW_PRECEDING : CURRENT_ROW_FOLLOWING;
4648 : default:
4649 0 : assert(0);
4650 : }
4651 : return 0;
4652 : }
4653 :
4654 : /* window functions */
4655 : static sql_exp*
4656 407 : generate_window_bound_call(mvc *sql, sql_exp **estart, sql_exp **eend, sql_exp *pe, sql_exp *e,
4657 : sql_exp *start, sql_exp *fend, int frame_type, int excl, tokens t1, tokens t2)
4658 : {
4659 407 : list *rargs1 = sa_list(sql->sa), *rargs2 = sa_list(sql->sa), *targs1 = sa_list(sql->sa), *targs2 = sa_list(sql->sa);
4660 407 : sql_subfunc *dc1, *dc2;
4661 407 : sql_subtype *it = sql_bind_localtype("int");
4662 :
4663 407 : if (pe) {
4664 186 : append(targs1, exp_subtype(pe));
4665 186 : append(targs2, exp_subtype(pe));
4666 186 : append(rargs1, exp_copy(sql, pe));
4667 186 : append(rargs2, exp_copy(sql, pe));
4668 : }
4669 407 : append(rargs1, exp_copy(sql, e));
4670 407 : append(rargs2, exp_copy(sql, e));
4671 407 : append(targs1, exp_subtype(e));
4672 407 : append(targs2, exp_subtype(e));
4673 407 : append(targs1, it);
4674 407 : append(targs2, it);
4675 407 : append(targs1, it);
4676 407 : append(targs2, it);
4677 407 : append(targs1, it);
4678 407 : append(targs2, it);
4679 407 : append(targs1, exp_subtype(start));
4680 407 : append(targs2, exp_subtype(fend));
4681 :
4682 407 : dc1 = sql_bind_func_(sql, "sys", "window_bound", targs1, F_ANALYTIC, true, false);
4683 407 : dc2 = sql_bind_func_(sql, "sys", "window_bound", targs2, F_ANALYTIC, true, false);
4684 407 : if (!dc1 || !dc2)
4685 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: function 'window_bound' not found");
4686 407 : append(rargs1, exp_atom_int(sql->sa, frame_type));
4687 407 : append(rargs2, exp_atom_int(sql->sa, frame_type));
4688 407 : append(rargs1, exp_atom_int(sql->sa, generate_window_bound(t1, true)));
4689 407 : append(rargs2, exp_atom_int(sql->sa, generate_window_bound(t2, false)));
4690 407 : append(rargs1, exp_atom_int(sql->sa, excl));
4691 407 : append(rargs2, exp_atom_int(sql->sa, excl));
4692 407 : append(rargs1, start);
4693 407 : append(rargs2, fend);
4694 :
4695 407 : *estart = exp_op(sql->sa, rargs1, dc1);
4696 407 : *eend = exp_op(sql->sa, rargs2, dc2);
4697 407 : return e; /* return something to say there were no errors */
4698 : }
4699 :
4700 : #define EC_NUMERIC(e) (e==EC_NUM||EC_INTERVAL(e)||e==EC_DEC||e==EC_FLT)
4701 :
4702 : static sql_exp*
4703 601 : calculate_window_bound(sql_query *query, sql_rel *p, tokens token, symbol *bound, sql_exp *ie, int frame_type, int f)
4704 : {
4705 601 : mvc *sql = query->sql;
4706 601 : sql_subtype *bt, *bound_tp = sql_bind_localtype("lng"), *iet = exp_subtype(ie);
4707 601 : sql_exp *res = NULL;
4708 :
4709 792 : if ((bound->token == SQL_PRECEDING || bound->token == SQL_FOLLOWING || bound->token == SQL_CURRENT_ROW) && bound->type == type_int) {
4710 191 : atom *a = NULL;
4711 191 : bt = (frame_type == FRAME_ROWS || frame_type == FRAME_GROUPS) ? bound_tp : iet;
4712 :
4713 191 : if ((bound->data.i_val == UNBOUNDED_PRECEDING_BOUND || bound->data.i_val == UNBOUNDED_FOLLOWING_BOUND)) {
4714 69 : a = atom_max_value(sql->sa, EC_NUMERIC(bt->type->eclass) ? bt : bound_tp);
4715 122 : } else if (bound->data.i_val == CURRENT_ROW_BOUND) {
4716 124 : a = atom_zero_value(sql->sa, EC_NUMERIC(bt->type->eclass) ? bt : bound_tp);
4717 : } else {
4718 0 : assert(0);
4719 : }
4720 191 : res = exp_atom(sql->sa, a);
4721 : } else { /* arbitrary expression case */
4722 410 : exp_kind ek = {type_value, card_column, FALSE};
4723 410 : const char *bound_desc = (token == SQL_PRECEDING) ? "PRECEDING" : "FOLLOWING";
4724 :
4725 410 : assert(token == SQL_PRECEDING || token == SQL_FOLLOWING);
4726 410 : if (!(res = rel_value_exp2(query, &p, bound, f, ek)))
4727 3 : return NULL;
4728 410 : if (!(bt = exp_subtype(res))) { /* frame bound is a parameter */
4729 3 : sql_subtype *t = (frame_type == FRAME_ROWS || frame_type == FRAME_GROUPS) ? bound_tp : iet;
4730 3 : if (rel_set_type_param(sql, t, p, res, 0) < 0) /* workaround */
4731 : return NULL;
4732 3 : bt = exp_subtype(res);
4733 : }
4734 410 : if (exp_is_null_no_value_opt(res))
4735 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s offset must not be NULL", bound_desc);
4736 409 : if ((frame_type == FRAME_ROWS || frame_type == FRAME_GROUPS) && bt->type->eclass != EC_NUM && !(res = exp_check_type(sql, bound_tp, p, res, type_equal)))
4737 : return NULL;
4738 409 : if (frame_type == FRAME_RANGE) {
4739 70 : sql_class iet_class = iet->type->eclass;
4740 :
4741 70 : if (!EC_NUMERIC(iet_class) && !EC_TEMP(iet_class))
4742 1 : return sql_error(sql, 02, SQLSTATE(42000) "Ranges with arbitrary expressions are available to numeric, interval and temporal types only");
4743 12 : if (EC_NUMERIC(iet_class) && !(res = exp_check_type(sql, iet, p, res, type_equal)))
4744 : return NULL;
4745 69 : if ((iet_class == EC_TIME || iet_class == EC_TIME_TZ) && bt->type->eclass != EC_SEC) {
4746 1 : (void) sql_error(sql, 02, SQLSTATE(42000) "For %s input the %s boundary must be an interval type up to the day", subtype2string2(sql->ta, iet), bound_desc);
4747 1 : sa_reset(sql->ta);
4748 1 : return NULL;
4749 : }
4750 68 : if (EC_TEMP(iet->type->eclass) && !EC_INTERVAL(bt->type->eclass)) {
4751 0 : (void) sql_error(sql, 02, SQLSTATE(42000) "For %s input the %s boundary must be an interval type", subtype2string2(sql->ta, iet), bound_desc);
4752 0 : sa_reset(sql->ta);
4753 0 : return NULL;
4754 : }
4755 : }
4756 : }
4757 : return res;
4758 : }
4759 :
4760 : static dlist*
4761 16 : get_window_clauses(mvc *sql, char* ident, symbol **partition_by_clause, symbol **order_by_clause, symbol **frame_clause)
4762 : {
4763 16 : dlist *window_specification = NULL;
4764 16 : char *window_ident;
4765 16 : int pos;
4766 :
4767 16 : if (mvc_highwater(sql))
4768 0 : return sql_error(sql, 10, SQLSTATE(42000) "Query too complex: running out of stack space");
4769 :
4770 16 : if ((window_specification = frame_get_window_def(sql, ident, &pos)) == NULL)
4771 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: window '%s' not found", ident);
4772 :
4773 : /* avoid infinite lookups */
4774 15 : if (frame_check_var_visited(sql, pos))
4775 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: cyclic references to window '%s' found", ident);
4776 14 : frame_set_var_visited(sql, pos);
4777 :
4778 14 : if (window_specification->h->next->data.sym) {
4779 2 : if (*partition_by_clause)
4780 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: redefinition of PARTITION BY clause from window '%s'", ident);
4781 2 : *partition_by_clause = window_specification->h->next->data.sym;
4782 : }
4783 14 : if (window_specification->h->next->next->data.sym) {
4784 4 : if (*order_by_clause)
4785 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: redefinition of ORDER BY clause from window '%s'", ident);
4786 3 : *order_by_clause = window_specification->h->next->next->data.sym;
4787 : }
4788 13 : if (window_specification->h->next->next->next->data.sym) {
4789 0 : if (*frame_clause)
4790 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: redefinition of frame clause from window '%s'", ident);
4791 0 : *frame_clause = window_specification->h->next->next->next->data.sym;
4792 : }
4793 :
4794 13 : window_ident = window_specification->h->data.sval;
4795 13 : if (window_ident && !get_window_clauses(sql, window_ident, partition_by_clause, order_by_clause, frame_clause))
4796 : return NULL; /* the error was already set */
4797 :
4798 : return window_specification; /* return something to say there were no errors */
4799 : }
4800 :
4801 : /*
4802 : * select x, y, rank_op() over (partition by x order by y) as, ...
4803 : aggr_op(z) over (partition by y order by x) as, ...
4804 : * from table [x,y,z,w,v]
4805 : *
4806 : * project and order by over x,y / y,x
4807 : * a = project( table ) [ x, y, z, w, v ], [ x, y]
4808 : * b = project( table ) [ x, y, z, w, v ], [ y, x]
4809 : *
4810 : * project with order dependent operators, ie combined prev/current value
4811 : * aa = project (a) [ x, y, r = rank_op(diff(x) (marks a new partition), rediff(diff(x), y) (marks diff value with in partition)), z, w, v ]
4812 : * project(aa) [ aa.x, aa.y, aa.r ] -- only keep current output list
4813 : * bb = project (b) [ x, y, a = aggr_op(z, diff(y), rediff(diff(y), x)), z, w, v ]
4814 : * project(bb) [ bb.x, bb.y, bb.a ] -- only keep current output list
4815 : */
4816 : static sql_exp *
4817 17947 : rel_rankop(sql_query *query, sql_rel **rel, symbol *se, int f)
4818 : {
4819 17947 : mvc *sql = query->sql;
4820 17947 : node *n;
4821 17947 : dlist *l = se->data.lval, *window_specification = NULL;
4822 17947 : symbol *window_function = l->h->data.sym, *partition_by_clause = NULL, *order_by_clause = NULL, *frame_clause = NULL;
4823 17947 : char *aname = NULL, *sname = NULL, *window_ident = NULL;
4824 17947 : sql_subfunc *wf = NULL;
4825 17947 : sql_exp *in = NULL, *pe = NULL, *oe = NULL, *call = NULL, *start = NULL, *eend = NULL, *fstart = NULL, *fend = NULL, *ie = NULL;
4826 17947 : sql_rel *p;
4827 17947 : list *gbe = NULL, *obe = NULL, *args = NULL, *types = NULL, *fargs = NULL;
4828 17947 : dnode *dn = window_function->data.lval->h, *dargs = NULL;
4829 17947 : int distinct = 0, frame_type, pos, nf = f, nfargs = 0;
4830 17947 : bool is_nth_value, supports_frames, found = false;
4831 :
4832 17947 : frame_clear_visited_flag(sql); /* clear visited flags before iterating */
4833 :
4834 17947 : if (l->h->next->type == type_list) {
4835 17931 : window_specification = l->h->next->data.lval;
4836 16 : } else if (l->h->next->type == type_string) {
4837 16 : const char* window_alias = l->h->next->data.sval;
4838 16 : if ((window_specification = frame_get_window_def(sql, window_alias, &pos)) == NULL)
4839 1 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: window '%s' not found", window_alias);
4840 15 : frame_set_var_visited(sql, pos);
4841 : } else {
4842 0 : assert(0);
4843 : }
4844 :
4845 17946 : window_ident = window_specification->h->data.sval;
4846 17946 : partition_by_clause = window_specification->h->next->data.sym;
4847 17946 : order_by_clause = window_specification->h->next->next->data.sym;
4848 17946 : frame_clause = window_specification->h->next->next->next->data.sym;
4849 :
4850 17946 : if (window_ident && !get_window_clauses(sql, window_ident, &partition_by_clause, &order_by_clause, &frame_clause))
4851 : return NULL;
4852 :
4853 17943 : frame_type = frame_clause ? frame_clause->data.lval->h->next->next->data.i_val : FRAME_RANGE;
4854 17943 : aname = qname_schema_object(dn->data.lval);
4855 17943 : sname = qname_schema(dn->data.lval);
4856 :
4857 17943 : is_nth_value = !strcmp(aname, "nth_value");
4858 17943 : bool is_value = is_nth_value || !strcmp(aname, "first_value") || !strcmp(aname, "last_value");
4859 17943 : supports_frames = window_function->token != SQL_RANK || is_value;
4860 :
4861 17943 : if (is_sql_update_set(f) || is_sql_psm(f) || is_sql_values(f) || is_sql_join(f) || is_sql_where(f) || is_sql_groupby(f) || is_sql_having(f) || is_psm_call(f) || is_sql_from(f)) {
4862 13 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
4863 13 : const char *clause = is_sql_update_set(f)||is_sql_psm(f)?"in SET, WHILE, IF, ELSE, CASE, WHEN, RETURN, ANALYZE clauses (use subquery)":is_sql_values(f)?"on an unique value":
4864 8 : is_sql_join(f)?"in JOIN conditions":is_sql_where(f)?"in WHERE clause":is_sql_groupby(f)?"in GROUP BY clause":
4865 4 : is_psm_call(f)?"in CALL":is_sql_from(f)?"in functions in FROM":"in HAVING clause";
4866 13 : return sql_error(sql, 02, SQLSTATE(42000) "%s: window function '%s' not allowed %s", toUpperCopy(uaname, aname), aname, clause);
4867 17930 : } else if (is_sql_aggr(f)) {
4868 2 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
4869 2 : return sql_error(sql, 02, SQLSTATE(42000) "%s: window functions not allowed inside aggregation functions", toUpperCopy(uaname, aname));
4870 17928 : } else if (is_sql_window(f)) {
4871 6 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
4872 6 : return sql_error(sql, 02, SQLSTATE(42000) "%s: window functions cannot be nested", toUpperCopy(uaname, aname));
4873 : }
4874 17922 : if (window_function->token == SQL_UNOP || window_function->token == SQL_OP) {
4875 3246 : window_function->token = SQL_NOP;
4876 3246 : dn->next->next->data.lval = dlist_append_symbol(sql->sa, dlist_create( sql->sa ), dn->next->next->data.sym); /* make a list */
4877 : }
4878 17922 : if (window_function->token == SQL_BINOP) {
4879 5149 : window_function->token = SQL_NOP;
4880 5149 : dn->next->next->data.lval = dlist_append_symbol(sql->sa, dlist_append_symbol(sql->sa, dlist_create( sql->sa ), dn->next->next->data.sym), dn->next->next->next->data.sym); /* make a list */
4881 5149 : dn->next->next->next = dn->next->next->next->next; /* skip second arg */
4882 : }
4883 17922 : if (window_function->token == SQL_AGGR)
4884 106 : dn->next->next->data.lval = dlist_append_symbol(sql->sa, dlist_create( sql->sa ), dn->next->next->data.sym); /* make a list */
4885 17922 : if (window_function->token == SQL_NOP)
4886 8397 : window_function->token = SQL_AGGR;
4887 17922 : if (window_function->token != SQL_RANK && window_function->token != SQL_AGGR) {
4888 0 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
4889 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: window function '%s' unknown", toUpperCopy(uaname, aname));
4890 : }
4891 :
4892 : /* window operations are only allowed in the projection */
4893 17922 : if (!is_sql_sel(f))
4894 0 : return sql_error(sql, 02, SQLSTATE(42000) "OVER: only possible within the selection");
4895 :
4896 17922 : p = *rel;
4897 : /* Partition By */
4898 17922 : if (partition_by_clause) {
4899 8208 : gbe = rel_partition_groupings(query, &p, partition_by_clause, NULL /* cannot use (selection) column references, as this result is a selection column */, nf | sql_window);
4900 8208 : if (!gbe)
4901 : return NULL;
4902 16432 : for (n = gbe->h ; n ; n = n->next) {
4903 8232 : sql_exp *en = n->data;
4904 :
4905 8232 : set_ascending(en);
4906 8232 : set_nulls_first(en);
4907 : }
4908 : }
4909 :
4910 : /* Order By */
4911 17914 : if (order_by_clause) {
4912 8883 : obe = rel_order_by(query, &p, order_by_clause, 0, sql_window);
4913 8883 : if (!obe)
4914 : return NULL;
4915 : }
4916 :
4917 17907 : fargs = sa_list(sql->sa);
4918 17907 : if (window_function->token == SQL_RANK) { /* rank function call */
4919 9414 : dlist *dl = dn->next->next->data.lval;
4920 9414 : bool is_lag = !strcmp(aname, "lag"), is_lead = !strcmp(aname, "lead"),
4921 9414 : extra_input = !strcmp(aname, "ntile") || !strcmp(aname, "rank") || !strcmp(aname, "dense_rank") || !strcmp(aname, "row_number") || !strcmp(aname, "percent_rank") || !strcmp(aname, "cume_dist");
4922 :
4923 9414 : distinct = dn->next->data.i_val;
4924 9414 : if (extra_input) { /* pass an input column for analytic functions that don't require it */
4925 9230 : sql_subfunc *star = sql_bind_func(sql, "sys", "star", NULL, NULL, F_FUNC, true, true);
4926 9230 : in = exp_op(sql->sa, NULL, star);
4927 9230 : append(fargs, in);
4928 : }
4929 9414 : if (dl)
4930 593 : for (dargs = dl->h ; dargs ; dargs = dargs->next) {
4931 339 : exp_kind ek = {type_value, card_column, FALSE};
4932 339 : sql_subtype *empty = sql_bind_localtype("void"), *bte = sql_bind_localtype("bte");
4933 :
4934 339 : in = rel_value_exp2(query, &p, dargs->data.sym, f | sql_window | sql_farg, ek);
4935 339 : if (!in)
4936 0 : return NULL;
4937 339 : if (!exp_subtype(in)) { /* we also do not expect parameters here */
4938 0 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
4939 0 : return sql_error(sql, 02, SQLSTATE(42000) "%s: parameters not allowed as arguments to window functions", toUpperCopy(uaname, aname));
4940 : }
4941 339 : if (!exp_name(in))
4942 151 : exp_label(sql->sa, in, ++sql->label);
4943 :
4944 : /* corner case, if the argument is null convert it into something countable such as bte */
4945 339 : if (subtype_cmp(exp_subtype(in), empty) == 0)
4946 20 : in = exp_convert(sql, in, empty, bte);
4947 339 : if ((is_lag || is_lead) && nfargs == 2) { /* lag and lead 3rd arg must have same type as 1st arg */
4948 10 : sql_exp *first = (sql_exp*) fargs->h->data;
4949 10 : if (!(in = exp_check_type(sql, exp_subtype(first), p, in, type_equal)))
4950 : return NULL;
4951 : }
4952 329 : if (!in)
4953 : return NULL;
4954 :
4955 339 : append(fargs, in);
4956 339 : in = exp_ref_save(sql, in);
4957 339 : nfargs++;
4958 : }
4959 : } else { /* aggregation function call */
4960 8493 : distinct = dn->next->data.i_val;
4961 22022 : for (dargs = dn->next->next->data.lval->h ; dargs && dargs->data.sym ; dargs = dargs->next) {
4962 13537 : exp_kind ek = {type_value, card_column, FALSE};
4963 13537 : sql_subtype *empty = sql_bind_localtype("void"), *bte = sql_bind_localtype("bte");
4964 :
4965 13537 : in = rel_value_exp2(query, &p, dargs->data.sym, f | sql_window | sql_farg, ek);
4966 13537 : if (!in)
4967 8 : return NULL;
4968 13530 : if (!exp_subtype(in)) { /* we also do not expect parameters here */
4969 1 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
4970 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: parameters not allowed as arguments to window functions", toUpperCopy(uaname, aname));
4971 : }
4972 13529 : if (!exp_name(in))
4973 10112 : exp_label(sql->sa, in, ++sql->label);
4974 :
4975 : /* corner case, if the argument is null convert it into something countable such as bte */
4976 13529 : if (subtype_cmp(exp_subtype(in), empty) == 0)
4977 46 : in = exp_convert(sql, in, empty, bte);
4978 13529 : if (!in)
4979 : return NULL;
4980 :
4981 13529 : append(fargs, in);
4982 13529 : in = exp_ref_save(sql, in);
4983 13529 : nfargs++;
4984 :
4985 13529 : if (!strcmp(aname, "count"))
4986 86 : append(fargs, exp_atom_bool(sql->sa, 1)); /* ignore nills */
4987 : }
4988 :
4989 8485 : if (!nfargs) { /* count(*) */
4990 109 : if (window_function->token == SQL_AGGR && strcmp(aname, "count") != 0) {
4991 2 : char *uaname = SA_NEW_ARRAY(sql->ta, char, strlen(aname) + 1);
4992 2 : return sql_error(sql, 02, SQLSTATE(42000) "%s: unable to perform '%s(*)'", toUpperCopy(uaname, aname), aname);
4993 : }
4994 107 : sql_subfunc *star = sql_bind_func(sql, "sys", "star", NULL, NULL, F_FUNC, true, true);
4995 107 : in = exp_op(sql->sa, NULL, star);
4996 107 : append(fargs, in);
4997 107 : append(fargs, exp_atom_bool(sql->sa, 0)); /* don't ignore nills */
4998 : }
4999 : }
5000 :
5001 17897 : if (distinct)
5002 4 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: DISTINCT clause is not implemented for window functions");
5003 :
5004 : /* diff for partitions */
5005 17893 : if (gbe) {
5006 8191 : sql_subtype *bt = sql_bind_localtype("bit");
5007 :
5008 16413 : for( n = gbe->h; n; n = n->next) {
5009 8223 : sql_subfunc *df;
5010 8223 : sql_exp *e = n->data;
5011 :
5012 8223 : if (!exp_subtype(e))
5013 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: parameters not allowed at PARTITION BY clause from window functions");
5014 :
5015 8222 : e = exp_copy(sql, e);
5016 8222 : args = sa_list(sql->sa);
5017 8222 : if (pe) {
5018 32 : df = sql_bind_func(sql, "sys", "diff", bt, exp_subtype(e), F_ANALYTIC, true, true);
5019 32 : append(args, pe);
5020 : } else {
5021 8190 : df = sql_bind_func(sql, "sys", "diff", exp_subtype(e), NULL, F_ANALYTIC, true, true);
5022 : }
5023 8222 : if (!df)
5024 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: function 'diff' not found");
5025 8222 : append(args, e);
5026 8222 : pe = exp_op(sql->sa, args, df);
5027 : }
5028 : } else {
5029 9702 : pe = exp_atom_bool(sql->sa, 0);
5030 : }
5031 :
5032 : /* diff for orderby */
5033 17892 : if (obe) {
5034 8874 : sql_subtype *bt = sql_bind_localtype("bit");
5035 :
5036 17904 : for( n = obe->h; n; n = n->next) {
5037 9030 : sql_subfunc *df;
5038 9030 : sql_exp *e = n->data;
5039 :
5040 9030 : if (!exp_subtype(e))
5041 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: parameters not allowed at ORDER BY clause from window functions");
5042 :
5043 9030 : e = exp_copy(sql, e);
5044 9030 : args = sa_list(sql->sa);
5045 9030 : if (oe) {
5046 156 : df = sql_bind_func(sql, "sys", "diff", bt, exp_subtype(e), F_ANALYTIC, true, true);
5047 156 : append(args, oe);
5048 : } else {
5049 8874 : df = sql_bind_func(sql, "sys", "diff", exp_subtype(e), NULL, F_ANALYTIC, true, true);
5050 : }
5051 9030 : if (!df)
5052 0 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: function 'diff' not found");
5053 9030 : append(args, e);
5054 9030 : oe = exp_op(sql->sa, args, df);
5055 : }
5056 : } else {
5057 9018 : oe = exp_atom_bool(sql->sa, 0);
5058 : }
5059 :
5060 17892 : if (frame_clause || supports_frames) {
5061 8596 : if (frame_type == FRAME_RANGE)
5062 8285 : ie = obe ? (sql_exp*) obe->t->data : in;
5063 : else
5064 311 : ie = obe ? oe : in;
5065 : }
5066 17892 : assert(oe && pe);
5067 :
5068 17892 : types = exp_types(sql->sa, fargs);
5069 17892 : wf = bind_func_(sql, sname, aname, types, F_ANALYTIC, false, &found, false);
5070 17892 : if (wf && !list_empty(fargs) && !(fargs = check_arguments_and_find_largest_any_type(sql, NULL, fargs, wf, 0, false)))
5071 : wf = NULL;
5072 17887 : if (!wf) {
5073 5 : char *arg_list = nfargs ? nary_function_arg_types_2str(sql, types, nfargs) : NULL;
5074 10 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: %s window function %s%s%s'%s'(%s)",
5075 5 : found ? "insufficient privileges for" : "no such", sname ? "'":"", sname ? sname : "", sname ? "'.":"", aname, arg_list ? arg_list : "");
5076 : }
5077 :
5078 : /* Frame */
5079 17887 : if (frame_clause) {
5080 410 : dnode *d = frame_clause->data.lval->h;
5081 410 : symbol *wstart = d->data.sym, *wend = d->next->data.sym, *rstart = wstart->data.lval->h->data.sym,
5082 410 : *rend = wend->data.lval->h->data.sym;
5083 410 : int excl = d->next->next->next->data.i_val;
5084 410 : bool shortcut = false;
5085 :
5086 410 : if (!supports_frames)
5087 4 : return sql_error(sql, 02, SQLSTATE(42000) "OVER: frame extend only possible with aggregation and first_value, last_value and nth_value functions");
5088 406 : if (excl != EXCLUDE_NONE)
5089 0 : return sql_error(sql, 02, SQLSTATE(42000) "Only EXCLUDE NO OTHERS exclusion is currently implemented");
5090 406 : if (list_empty(obe) && frame_type == FRAME_GROUPS)
5091 2 : return sql_error(sql, 02, SQLSTATE(42000) "GROUPS frame requires an order by expression");
5092 404 : if (wstart->token == SQL_FOLLOWING && wend->token == SQL_PRECEDING)
5093 1 : return sql_error(sql, 02, SQLSTATE(42000) "FOLLOWING offset must come after PRECEDING offset");
5094 403 : if (wstart->token == SQL_CURRENT_ROW && wend->token == SQL_PRECEDING)
5095 1 : return sql_error(sql, 02, SQLSTATE(42000) "CURRENT ROW offset must come after PRECEDING offset");
5096 402 : if (wstart->token == SQL_FOLLOWING && wend->token == SQL_CURRENT_ROW)
5097 1 : return sql_error(sql, 02, SQLSTATE(42000) "FOLLOWING offset must come after CURRENT ROW offset");
5098 401 : if (wstart->token != SQL_CURRENT_ROW && wend->token != SQL_CURRENT_ROW && wstart->token == wend->token && frame_type != FRAME_ROWS)
5099 4 : return sql_error(sql, 02, SQLSTATE(42000) "Non-centered windows are only supported in row frames");
5100 367 : if (frame_type == FRAME_RANGE) {
5101 97 : if (((wstart->token == SQL_PRECEDING || wstart->token == SQL_FOLLOWING) && rstart->token != SQL_PRECEDING && rstart->token != SQL_CURRENT_ROW && rstart->token != SQL_FOLLOWING) ||
5102 59 : ((wend->token == SQL_PRECEDING || wend->token == SQL_FOLLOWING) && rend->token != SQL_PRECEDING && rend->token != SQL_CURRENT_ROW && rend->token != SQL_FOLLOWING)) {
5103 40 : if (list_empty(obe))
5104 2 : return sql_error(sql, 02, SQLSTATE(42000) "RANGE frame with PRECEDING/FOLLOWING offset requires an order by expression");
5105 38 : if (list_length(obe) > 1)
5106 0 : return sql_error(sql, 02, SQLSTATE(42000) "RANGE with offset PRECEDING/FOLLOWING requires exactly one ORDER BY column");
5107 : }
5108 : }
5109 :
5110 395 : if (list_empty(obe) && frame_type == FRAME_RANGE) { /* window functions are weird */
5111 : frame_type = FRAME_ALL;
5112 : shortcut = true;
5113 383 : } else if (!is_value && (rstart->token == SQL_PRECEDING || rstart->token == SQL_CURRENT_ROW || rstart->token == SQL_FOLLOWING) && rstart->type == type_int &&
5114 150 : (rend->token == SQL_PRECEDING || rend->token == SQL_CURRENT_ROW || rend->token == SQL_FOLLOWING) && rend->type == type_int) {
5115 : /* special cases, don't calculate bounds */
5116 146 : if (frame_type != FRAME_ROWS && rstart->data.i_val == UNBOUNDED_PRECEDING_BOUND && rend->data.i_val == CURRENT_ROW_BOUND) {
5117 : frame_type = FRAME_UNBOUNDED_TILL_CURRENT_ROW;
5118 : shortcut = true;
5119 21 : } else if (frame_type != FRAME_ROWS && rstart->data.i_val == CURRENT_ROW_BOUND && rend->data.i_val == UNBOUNDED_FOLLOWING_BOUND) {
5120 : frame_type = FRAME_CURRENT_ROW_TILL_UNBOUNDED;
5121 : shortcut = true;
5122 86 : } else if (rstart->data.i_val == UNBOUNDED_PRECEDING_BOUND && rend->data.i_val == UNBOUNDED_FOLLOWING_BOUND) {
5123 : frame_type = FRAME_ALL;
5124 : shortcut = true;
5125 76 : } else if (rstart->data.i_val == CURRENT_ROW_BOUND && rend->data.i_val == CURRENT_ROW_BOUND) {
5126 395 : frame_type = FRAME_CURRENT_ROW;
5127 395 : shortcut = true;
5128 : }
5129 : }
5130 395 : if (!shortcut) {
5131 302 : if (!(fstart = calculate_window_bound(query, p, wstart->token, rstart, ie, frame_type, f | sql_window)))
5132 : return NULL;
5133 299 : if (!(fend = calculate_window_bound(query, p, wend->token, rend, ie, frame_type, f | sql_window)))
5134 : return NULL;
5135 471 : if (!generate_window_bound_call(sql, &start, &eend, gbe ? pe : NULL, ie, fstart, fend, frame_type, excl,
5136 : wstart->token, wend->token))
5137 : return NULL;
5138 : }
5139 17477 : } else if (supports_frames) { /* for analytic functions with no frame clause, we use the standard default values */
5140 8183 : if (is_value) {
5141 108 : sql_subtype *bound_tp = sql_bind_localtype("lng"), *bt = (frame_type == FRAME_ROWS || frame_type == FRAME_GROUPS) ? bound_tp : exp_subtype(ie);
5142 108 : unsigned char sclass = bt->type->eclass;
5143 :
5144 136 : fstart = exp_atom(sql->sa, atom_max_value(sql->sa, EC_NUMERIC(sclass) ? bt : bound_tp));
5145 108 : fend = order_by_clause ? exp_atom(sql->sa, atom_zero_value(sql->sa, EC_NUMERIC(sclass) ? bt : bound_tp)) :
5146 23 : exp_atom(sql->sa, atom_max_value(sql->sa, EC_NUMERIC(sclass) ? bt : bound_tp));
5147 :
5148 157 : if (generate_window_bound_call(sql, &start, &eend, gbe ? pe : NULL, ie, fstart, fend, frame_type, EXCLUDE_NONE, SQL_PRECEDING, SQL_FOLLOWING) == NULL)
5149 : return NULL;
5150 : } else {
5151 8075 : frame_type = list_empty(obe) ? FRAME_ALL : FRAME_UNBOUNDED_TILL_CURRENT_ROW;
5152 : }
5153 : }
5154 :
5155 17869 : args = sa_list(sql->sa);
5156 41217 : for (node *n = fargs->h ; n ; n = n->next)
5157 23348 : list_append(args, n->data);
5158 17869 : list_append(args, pe);
5159 17869 : list_append(args, oe);
5160 17869 : if (supports_frames) {
5161 8575 : list_append(args, exp_atom_int(sql->sa, frame_type));
5162 8575 : list_append(args, start ? start : exp_atom_oid(sql->sa, 1));
5163 8575 : list_append(args, eend ? eend : exp_atom_oid(sql->sa, 1));
5164 : }
5165 17869 : call = exp_rank_op(sql->sa, list_empty(args) ? NULL : args, gbe, obe, wf);
5166 17869 : *rel = p;
5167 17869 : return call;
5168 : }
5169 :
5170 : sql_exp *
5171 5748960 : rel_value_exp2(sql_query *query, sql_rel **rel, symbol *se, int f, exp_kind ek)
5172 : {
5173 5748960 : mvc *sql = query->sql;
5174 5748960 : if (!se)
5175 : return NULL;
5176 :
5177 5748960 : if (mvc_highwater(sql))
5178 0 : return sql_error(sql, 10, SQLSTATE(42000) "Query too complex: running out of stack space");
5179 :
5180 5748960 : if (rel && *rel && (*rel)->card == CARD_AGGR) { /* group by expression case, handle it before */
5181 105577 : sql_exp *exp = NULL;
5182 105577 : if (!is_sql_aggr(f) && !is_sql_window(f))
5183 105118 : exp = frame_get_groupby_expression(sql, se);
5184 105577 : if (sql->errstr[0] != '\0')
5185 : return NULL;
5186 105577 : if (exp) {
5187 78 : sql_exp *res = exp_ref(sql, exp);
5188 78 : res->card = (*rel)->card;
5189 78 : if (se->token == SQL_AGGR) {
5190 0 : dlist *l = se->data.lval;
5191 0 : int distinct = l->h->next->data.i_val;
5192 0 : if (distinct)
5193 0 : set_distinct(res);
5194 : }
5195 78 : if (!query_has_outer(query) && is_groupby((*rel)->op))
5196 74 : res = rel_groupby_add_aggr(sql, *rel, res);
5197 78 : return res;
5198 : }
5199 : }
5200 :
5201 5748882 : switch (se->token) {
5202 1827 : case SQL_OP:
5203 1827 : return rel_op(query, rel, se, f, ek);
5204 77657 : case SQL_UNOP:
5205 77657 : return rel_unop(query, rel, se, f, ek);
5206 373954 : case SQL_BINOP:
5207 373954 : return rel_binop(query, rel, se, f, ek);
5208 84771 : case SQL_NOP:
5209 84771 : return rel_nop(query, rel, se, f, ek);
5210 18726 : case SQL_AGGR:
5211 18726 : return rel_aggr(query, rel, se, f);
5212 17947 : case SQL_WINDOW:
5213 17947 : return rel_rankop(query, rel, se, f);
5214 2318804 : case SQL_IDENT:
5215 : case SQL_COLUMN:
5216 2318804 : return rel_column_ref(query, rel, se, f );
5217 3007 : case SQL_NAME: {
5218 3007 : dlist *l = se->data.lval;
5219 3007 : const char *sname = qname_schema(l);
5220 3007 : const char *vname = qname_schema_object(l);
5221 3007 : return rel_exp_variable_on_scope(sql, sname, vname);
5222 : }
5223 48172 : case SQL_VALUES:
5224 : case SQL_WITH:
5225 : case SQL_SELECT: {
5226 48172 : sql_rel *r = NULL;
5227 :
5228 48172 : if (is_psm_call(f) || is_sql_merge(f))
5229 8 : return sql_error(sql, 02, SQLSTATE(42000) "%s: subqueries not supported inside %s", is_psm_call(f) ? "CALL" : "MERGE", is_psm_call(f) ? "CALL statements" : "MERGE conditions");
5230 48168 : if (rel && *rel)
5231 34143 : query_push_outer(query, *rel, f);
5232 48168 : if (se->token == SQL_WITH) {
5233 30 : r = rel_with_query(query, se);
5234 48138 : } else if (se->token == SQL_VALUES) {
5235 218 : r = rel_values(query, se, NULL);
5236 : } else {
5237 47920 : assert(se->token == SQL_SELECT);
5238 47920 : exp_kind nek = ek;
5239 47920 : nek.aggr = is_sql_aggr(f);
5240 47920 : if (is_sql_no_subquery(f))
5241 2 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: subquery not allowed");
5242 :
5243 47918 : r = rel_subquery(query, se, nek);
5244 47918 : if (r)
5245 47818 : exps_label(sql, r->exps);
5246 : }
5247 48166 : if (rel && *rel) {
5248 34141 : *rel = query_pop_outer(query);
5249 34141 : if (is_sql_join(f) && is_groupby((*rel)->op)) {
5250 0 : return sql_error(sql, 05, SQLSTATE(42000) "SELECT: aggregate functions not allowed in JOIN conditions");
5251 34141 : } else if (is_sql_where(f) && is_groupby((*rel)->op)) {
5252 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: aggregate functions not allowed in WHERE clause");
5253 34141 : } else if ((is_sql_update_set(f) || is_sql_psm(f)) && is_groupby((*rel)->op)) {
5254 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: aggregate functions not allowed in SET, WHILE, IF, ELSE, CASE, WHEN, RETURN, ANALYZE clauses");
5255 : }
5256 : }
5257 48166 : if (!r)
5258 : return NULL;
5259 48063 : if (ek.type == type_value && ek.card <= card_set && is_project(r->op) && list_length(r->exps) > 1)
5260 16 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: subquery must return only one column");
5261 48047 : if (ek.type == type_relation && is_project(r->op) && list_length(r->exps) != ek.type)
5262 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: subquery has too %s columns", list_length(r->exps) < ek.type ? "few" : "many");
5263 48047 : if (ek.type == type_value && list_length(r->exps) == 1 && !is_sql_psm(f)) /* for now don't rename multi attribute results */
5264 35880 : r = rel_zero_or_one(sql, r, ek);
5265 48047 : return exp_rel(sql, r);
5266 : }
5267 215 : case SQL_TABLE: {
5268 : /* turn a subquery into a tabular result */
5269 215 : *rel = rel_selects(query, se->data.sym);
5270 215 : if (*rel)
5271 213 : return lastexp(*rel);
5272 : return NULL;
5273 : }
5274 1612 : case SQL_PARAMETER: {
5275 1612 : assert(se->type == type_int);
5276 1612 : sql_arg *a = sql_bind_paramnr(sql, se->data.i_val);
5277 1612 : if (sql->emode != m_prepare) {
5278 1 : if (a && a->name && a->name[0])
5279 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: named placeholder ('%s') but named values list is missing", a->name);
5280 : else
5281 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: parameters ('?') not allowed in normal queries, use PREPARE");
5282 : }
5283 1611 : return exp_atom_ref(sql->sa, se->data.i_val, a?&a->type:NULL);
5284 : }
5285 105270 : case SQL_NULL:
5286 105270 : return exp_null(sql->sa, sql_bind_localtype("void"));
5287 1590 : case SQL_NEXT:
5288 1590 : return rel_next_value_for(sql, se);
5289 169087 : case SQL_CAST:
5290 169087 : return rel_cast(query, rel, se, f);
5291 104571 : case SQL_CASE:
5292 : case SQL_COALESCE:
5293 : case SQL_NULLIF:
5294 104571 : return rel_case_exp(query, rel, se, f);
5295 1 : case SQL_RANK:
5296 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: window function %s requires an OVER clause", qname_schema_object(se->data.lval->h->data.lval));
5297 25 : case SQL_XMLELEMENT:
5298 : case SQL_XMLFOREST:
5299 : case SQL_XMLCOMMENT:
5300 : case SQL_XMLATTRIBUTE:
5301 : case SQL_XMLCONCAT:
5302 : case SQL_XMLDOCUMENT:
5303 : case SQL_XMLPI:
5304 : case SQL_XMLTEXT:
5305 25 : return rel_xml(query, rel, se, f, ek);
5306 2421646 : default:
5307 2421646 : return rel_logical_value_exp(query, rel, se, f, ek);
5308 : }
5309 : }
5310 :
5311 : static int exps_has_rank(list *exps);
5312 :
5313 : static int
5314 : exp_has_rank(sql_exp *e)
5315 : {
5316 : switch(e->type) {
5317 : case e_convert:
5318 : return exp_has_rank(e->l);
5319 : case e_func:
5320 : if (e->r)
5321 : return 1;
5322 : /* fall through */
5323 : case e_aggr:
5324 : return exps_has_rank(e->l);
5325 : case e_cmp:
5326 : if (e->flag == cmp_or || e->flag == cmp_filter)
5327 : return exps_has_rank(e->l) || exps_has_rank(e->r);
5328 : if (e->flag == cmp_in || e->flag == cmp_notin)
5329 : return exp_has_rank(e->l) || exps_has_rank(e->r);
5330 : return exp_has_rank(e->l) || exp_has_rank(e->r) || (e->f && exp_has_rank(e->f));
5331 : default:
5332 : return 0;
5333 : }
5334 : }
5335 :
5336 : /* TODO create exps_has (list, fptr ) */
5337 : static int
5338 : exps_has_rank(list *exps)
5339 : {
5340 : if (!exps || list_empty(exps))
5341 : return 0;
5342 : for(node *n = exps->h; n; n=n->next){
5343 : sql_exp *e = n->data;
5344 :
5345 : if (exp_has_rank(e))
5346 : return 1;
5347 : }
5348 : return 0;
5349 : }
5350 :
5351 : sql_exp *
5352 4428009 : rel_value_exp(sql_query *query, sql_rel **rel, symbol *se, int f, exp_kind ek)
5353 : {
5354 4428009 : if (!se)
5355 : return NULL;
5356 :
5357 4428009 : if (mvc_highwater(query->sql))
5358 0 : return sql_error(query->sql, 10, SQLSTATE(42000) "Query too complex: running out of stack space");
5359 :
5360 4428009 : sql_exp *e = rel_value_exp2(query, rel, se, f, ek);
5361 4427998 : if (e && (se->token == SQL_SELECT || se->token == SQL_TABLE) && !exp_is_rel(e)) {
5362 0 : assert(*rel);
5363 0 : return rel_lastexp(query->sql, *rel);
5364 : }
5365 : return e;
5366 : }
5367 :
5368 : static sql_exp *
5369 1305222 : column_exp(sql_query *query, sql_rel **rel, symbol *column_e, int f)
5370 : {
5371 1305222 : dlist *l = column_e->data.lval;
5372 1305222 : exp_kind ek = {type_value, card_column, FALSE};
5373 1305222 : sql_exp *ve;
5374 :
5375 1305222 : if (f == sql_sel && rel && *rel && (*rel)->card < CARD_AGGR)
5376 82420 : ek.card = card_value;
5377 1305222 : ve = rel_value_exp(query, rel, l->h->data.sym, f, ek);
5378 1305212 : if (!ve)
5379 : return NULL;
5380 : /* AS name */
5381 1304104 : if (ve && l->h->next->data.sval)
5382 492792 : exp_setname(query->sql, ve, NULL, l->h->next->data.sval);
5383 : return ve;
5384 : }
5385 :
5386 : static int
5387 806984 : exp_is_not_intern(sql_exp *e)
5388 : {
5389 806984 : return is_intern(e)?-1:0;
5390 : }
5391 :
5392 : static void
5393 122291 : rel_remove_internal_exp(sql_rel *rel)
5394 : {
5395 122291 : if (rel->exps) {
5396 122291 : list *n_exps = list_select(rel->exps, rel, (fcmp)&exp_is_not_intern, (fdup)NULL);
5397 :
5398 122291 : rel->exps = n_exps;
5399 : }
5400 122291 : }
5401 :
5402 : static inline int
5403 16 : exp_key(sql_exp *e)
5404 : {
5405 16 : if (e->alias.name)
5406 16 : return hash_key(e->alias.name);
5407 : return 0;
5408 : }
5409 :
5410 : static list *
5411 5 : group_merge_exps(mvc *sql, list *gexps, list *exps)
5412 : {
5413 5 : int nexps = list_length(gexps) + list_length(exps);
5414 :
5415 5 : sql_hash *ht = hash_new(sql->ta, nexps, (fkeyvalue)&exp_key);
5416 :
5417 9 : for (node *n = gexps->h; n ; n = n->next) { /* first add grouping expressions */
5418 4 : sql_exp *e = n->data;
5419 4 : int key = ht->key(e);
5420 :
5421 4 : hash_add(ht, key, e);
5422 : }
5423 :
5424 17 : for (node *n = exps->h; n ; n = n->next) { /* then test if the new grouping expressions are already there */
5425 12 : sql_exp *e = n->data;
5426 12 : int key = ht->key(e);
5427 12 : sql_hash_e *he = ht->buckets[key&(ht->size-1)];
5428 12 : bool duplicates = false;
5429 :
5430 16 : for (; he && !duplicates; he = he->chain) {
5431 4 : sql_exp *f = he->value;
5432 :
5433 4 : if (!exp_equal(e, f))
5434 4 : duplicates = true;
5435 : }
5436 12 : hash_add(ht, key, e);
5437 12 : if (!duplicates) {
5438 8 : list_append(gexps, e);
5439 8 : n->data = exp_ref(sql, e);
5440 : }
5441 : }
5442 5 : return gexps;
5443 : }
5444 :
5445 : static list *
5446 58133 : rel_table_exp(sql_query *query, sql_rel **rel, symbol *column_e, bool single_exp )
5447 : {
5448 58133 : mvc *sql = query->sql;
5449 58133 : if (column_e->token == SQL_TABLE && column_e->data.lval->h->type == type_symbol) {
5450 0 : sql_rel *r;
5451 :
5452 0 : if (!is_project((*rel)->op))
5453 : return NULL;
5454 0 : r = rel_named_table_function(query, (*rel)->l, column_e, 0, NULL);
5455 0 : if (!r)
5456 : return NULL;
5457 0 : *rel = r;
5458 0 : return sa_list(sql->sa);
5459 58133 : } else if (column_e->token == SQL_TABLE) {
5460 57025 : char *tname = column_e->data.lval->h->data.sval;
5461 57025 : list *exps = NULL;
5462 57025 : sql_rel *project = *rel, *groupby = NULL;
5463 :
5464 : /* if there's a group by relation in the tree, skip it for the '*' case and use the underlying projection */
5465 57025 : if (project) {
5466 66570 : while (is_groupby(project->op) || is_select(project->op)) {
5467 9545 : if (is_groupby(project->op))
5468 5 : groupby = project;
5469 9545 : if (project->l)
5470 9545 : project = project->l;
5471 : }
5472 : assert(project);
5473 : }
5474 :
5475 57025 : if (project->op == op_project && project->l && project == *rel && !tname && !rel_is_ref(project) && !need_distinct(project) && single_exp) {
5476 412 : sql_rel *l = project->l;
5477 412 : if (!l || !is_project(l->op) || list_length(project->exps) == list_length(l->exps)) {
5478 405 : rel_remove_internal_exp(*rel);
5479 405 : exps = project->exps;
5480 405 : *rel = project->l;
5481 : }
5482 : }
5483 57025 : if ((exps || (exps = rel_table_projections(sql, project, tname, 0)) != NULL) && !list_empty(exps)) {
5484 57021 : if (!(exps = check_distinct_exp_names(sql, exps)))
5485 0 : return sql_error(sql, 02, SQLSTATE(42000) "Duplicate column names in table%s%s%s projection list", tname ? " '" : "", tname ? tname : "", tname ? "'" : "");
5486 57021 : if (groupby) {
5487 5 : groupby->exps = group_merge_exps(sql, groupby->exps, exps);
5488 9 : for (node *n = groupby->exps->h ; n ; n = n->next) {
5489 8 : sql_exp *e = n->data;
5490 :
5491 8 : if (e->card > groupby->card) {
5492 4 : if (exp_name(e) && !has_label(e))
5493 4 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", exp_name(e));
5494 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
5495 : }
5496 : }
5497 : }
5498 57017 : return exps;
5499 : }
5500 4 : if (!tname)
5501 2 : return sql_error(sql, 02, SQLSTATE(42000) "Table expression without table name");
5502 2 : return sql_error(sql, 02, SQLSTATE(42000) "Column expression Table '%s' unknown", tname);
5503 : }
5504 : return NULL;
5505 : }
5506 :
5507 : sql_exp *
5508 1362247 : rel_column_exp(sql_query *query, sql_rel **rel, symbol *column_e, int f)
5509 : {
5510 1362247 : if (column_e->token == SQL_COLUMN || column_e->token == SQL_IDENT)
5511 1305220 : return column_exp(query, rel, column_e, f);
5512 : return NULL;
5513 : }
5514 :
5515 : static sql_rel*
5516 369005 : rel_where_groupby_nodes(sql_query *query, sql_rel *rel, SelectNode *sn, int *group_totals)
5517 : {
5518 369005 : mvc *sql = query->sql;
5519 :
5520 369005 : if (sn->where) {
5521 145147 : rel = rel_logical_exp(query, rel, sn->where, sql_where);
5522 145147 : if (!rel) {
5523 73 : if (sql->errstr[0] == 0)
5524 0 : return sql_error(sql, 02, SQLSTATE(42000) "Subquery result missing");
5525 : return NULL;
5526 : }
5527 : }
5528 368932 : query_processed(query);
5529 :
5530 368930 : if (rel && sn->groupby) {
5531 9771 : list *gbe = NULL, *sets = NULL;
5532 9771 : int all = 0;
5533 9771 : if (sn->groupby->data.lval == NULL) { /* ALL */
5534 : all = 1;
5535 : } else {
5536 33106 : for (dnode *o = sn->groupby->data.lval->h; o ; o = o->next) {
5537 23462 : symbol *grouping = o->data.sym;
5538 23462 : if (grouping->token == SQL_ROLLUP || grouping->token == SQL_CUBE || grouping->token == SQL_GROUPING_SETS) {
5539 119 : *group_totals |= sql_group_totals;
5540 119 : break;
5541 : }
5542 : }
5543 9763 : gbe = rel_groupings(query, &rel, sn->groupby, sn->selection, sql_sel | sql_groupby | *group_totals, false, &sets);
5544 9763 : if (!gbe)
5545 19 : return NULL;
5546 : }
5547 9752 : rel = rel_groupby(sql, rel, gbe);
5548 9752 : if (rel && all)
5549 8 : rel->flag = 2;
5550 9752 : if (sets && list_length(sets) > 1) { /* if there is only one combination, there is no reason to generate unions */
5551 114 : prop *p = prop_create(sql->sa, PROP_GROUPINGS, rel->p);
5552 114 : p->value.pval = sets;
5553 114 : rel->p = p;
5554 : }
5555 : }
5556 :
5557 368911 : if (rel && sn->having) {
5558 : /* having implies group by, ie if not supplied do a group by */
5559 1764 : if (rel->op != op_groupby)
5560 128 : rel = rel_groupby(sql, rel, NULL);
5561 : }
5562 368911 : query_processed(query);
5563 368910 : return rel;
5564 : }
5565 :
5566 : static sql_rel*
5567 367783 : rel_having_limits_nodes(sql_query *query, sql_rel *rel, SelectNode *sn, exp_kind ek, int group_totals)
5568 : {
5569 367783 : mvc *sql = query->sql;
5570 367783 : sql_rel *inner = NULL;
5571 367783 : int single_value = 1;
5572 :
5573 367783 : if (is_project(rel->op) && rel->l) {
5574 367783 : inner = rel->l;
5575 367783 : single_value = 0;
5576 : }
5577 :
5578 367783 : if (sn->having) {
5579 1752 : if (inner && is_groupby(inner->op))
5580 1752 : set_processed(inner);
5581 1752 : if (!(inner = rel_logical_exp(query, inner, sn->having, sql_having | group_totals)))
5582 : return NULL;
5583 1713 : if (inner->exps && exps_card(inner->exps) > CARD_AGGR)
5584 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: cannot compare sets with values, probably an aggregate function missing");
5585 1713 : if (!single_value)
5586 1713 : rel->l = inner;
5587 : }
5588 :
5589 367744 : if (rel && sn->distinct)
5590 1027 : rel = rel_distinct(rel);
5591 :
5592 367744 : if (rel && sn->orderby) {
5593 36634 : list *obe = NULL;
5594 36634 : sql_rel *sel = NULL, *l = rel->l;
5595 :
5596 : /* project( select ) */
5597 36634 : if (sn->having && is_select(l->op)) {
5598 52 : sel = l;
5599 52 : rel->l = l->l;
5600 : }
5601 36634 : rel = rel_orderby(sql, rel);
5602 36634 : set_processed(rel);
5603 36634 : obe = rel_order_by(query, &rel, sn->orderby, sn->distinct, sql_orderby | group_totals);
5604 36634 : if (!obe)
5605 : return NULL;
5606 36594 : rel->r = obe;
5607 36594 : if (sel) {
5608 51 : sql_rel *o = rel, *p = o->l;
5609 51 : p->l = sel;
5610 : }
5611 : }
5612 367704 : if (!rel)
5613 : return NULL;
5614 :
5615 367704 : if (sn->limit || sn->offset) {
5616 16505 : sql_subtype *lng = sql_bind_localtype("lng");
5617 16508 : list *exps = new_exp_list(sql->sa);
5618 :
5619 16508 : if (sn->limit) {
5620 16482 : sql_exp *l = rel_value_exp(query, NULL, sn->limit, 0, ek);
5621 :
5622 16482 : if (!l || !(l=exp_check_type(sql, lng, NULL, l, type_equal)))
5623 0 : return NULL;
5624 16482 : if ((ek.card != card_relation && sn->limit) &&
5625 : (ek.card == card_value && sn->limit)) {
5626 11 : sql_subfunc *zero_or_one = sql_bind_func(sql, "sys", "zero_or_one", exp_subtype(l), NULL, F_AGGR, true, true);
5627 11 : l = exp_aggr1(sql->sa, l, zero_or_one, 0, 0, CARD_ATOM, has_nil(l));
5628 : }
5629 16482 : list_append(exps, l);
5630 : } else
5631 26 : list_append(exps, exp_atom(sql->sa, atom_general(sql->sa, lng, NULL, 0)));
5632 16508 : if (sn->offset) {
5633 85 : sql_exp *o = rel_value_exp( query, NULL, sn->offset, 0, ek);
5634 85 : if (!o || !(o=exp_check_type(sql, lng, NULL, o, type_equal)))
5635 0 : return NULL;
5636 85 : list_append(exps, o);
5637 : }
5638 16508 : rel = rel_topn(sql->sa, rel, exps);
5639 : }
5640 :
5641 367707 : if (sn->sample || sn->seed) {
5642 22 : list *exps = new_exp_list(sql->sa);
5643 :
5644 24 : if (sn->sample) {
5645 23 : sql_exp *s = rel_value_exp(query, NULL, sn->sample, 0, ek);
5646 23 : if (!s)
5647 : return NULL;
5648 23 : if (!exp_subtype(s) && rel_set_type_param(sql, sql_bind_localtype("lng"), NULL, s, 0) < 0)
5649 : return NULL;
5650 23 : list_append(exps, s);
5651 : } else {
5652 1 : assert(sn->seed);
5653 1 : return sql_error(sql, 02, SQLSTATE(42000) "SEED: cannot have SEED without SAMPLE");
5654 : }
5655 23 : if (sn->seed) {
5656 12 : sql_exp *e = rel_value_exp(query, NULL, sn->seed, 0, ek);
5657 12 : if (!e || !(e=exp_check_type(sql, sql_bind_localtype("int"), NULL, e, type_equal)))
5658 0 : return NULL;
5659 12 : list_append(exps, e);
5660 : }
5661 23 : rel = rel_sample(sql->sa, rel, exps);
5662 : }
5663 :
5664 : /* after parsing the current query, set the group by relation as processed */
5665 367708 : if (!sn->having && inner && is_groupby(inner->op))
5666 28265 : set_processed(inner);
5667 367708 : if (rel)
5668 367708 : set_processed(rel);
5669 : return rel;
5670 : }
5671 :
5672 : static sql_rel *
5673 60 : join_on_column_name(sql_query *query, sql_rel *rel, sql_rel *t1, sql_rel *t2, int op, int l_nil, int r_nil)
5674 : {
5675 60 : mvc *sql = query->sql;
5676 60 : int found = 0, full = (op == op_full), right = (op == op_right);
5677 60 : list *exps = rel_projections(sql, t1, NULL, 1, 0);
5678 60 : list *r_exps = rel_projections(sql, t2, NULL, 1, 0);
5679 60 : list *outexps = new_exp_list(sql->sa);
5680 :
5681 60 : if (!exps || !r_exps)
5682 : return NULL;
5683 236 : for (node *n = exps->h; n; n = n->next) {
5684 179 : sql_exp *le = n->data;
5685 179 : int multi = 0;
5686 179 : const char *rname = exp_relname(le), *name = exp_name(le);
5687 179 : sql_exp *re = exps_bind_column(r_exps, name, NULL, &multi, 0);
5688 :
5689 179 : if (re) {
5690 136 : if (multi)
5691 3 : return sql_error(sql, ERR_AMBIGUOUS, SQLSTATE(42000) "NATURAL JOIN: common column name '%s' appears more than once in right table", rname);
5692 134 : multi = 0;
5693 134 : le = exps_bind_column(exps, name, NULL, &multi, 0);
5694 134 : if (multi)
5695 0 : return sql_error(sql, ERR_AMBIGUOUS, SQLSTATE(42000) "NATURAL JOIN: common column name '%s' appears more than once in left table", rname);
5696 :
5697 134 : found = 1;
5698 134 : if (!(rel = rel_compare_exp(query, rel, le, re, "=", TRUE, 0, 0, 0, 0)))
5699 : return NULL;
5700 133 : list_remove_data(r_exps, NULL, re);
5701 133 : if (full) {
5702 12 : sql_exp *cond = rel_unop_(sql, rel, le, "sys", "isnull", card_value);
5703 12 : if (!cond)
5704 : return NULL;
5705 12 : set_has_no_nil(cond);
5706 12 : if (rel_convert_types(sql, NULL, NULL, &le, &re, 1, type_equal_no_any) < 0)
5707 : return NULL;
5708 12 : if (!(le = rel_nop_(sql, rel, cond, re, le, NULL, "sys", "ifthenelse", card_value)))
5709 : return NULL;
5710 121 : } else if (right) {
5711 3 : le = re;
5712 : }
5713 133 : exp_setname(sql, le, rname, name);
5714 133 : set_not_unique(le);
5715 133 : append(outexps, le);
5716 : } else {
5717 43 : if (l_nil)
5718 5 : set_has_nil(le);
5719 43 : set_not_unique(le);
5720 43 : append(outexps, le);
5721 : }
5722 : }
5723 57 : if (!found)
5724 2 : return sql_error(sql, 02, SQLSTATE(42000) "JOIN: no columns of tables '%s' and '%s' match", rel_name(t1)?rel_name(t1):"", rel_name(t2)?rel_name(t2):"");
5725 86 : for (node *n = r_exps->h; n; n = n->next) {
5726 31 : sql_exp *re = n->data;
5727 31 : if (r_nil)
5728 3 : set_has_nil(re);
5729 31 : set_not_unique(re);
5730 31 : append(outexps, re);
5731 : }
5732 55 : rel = rel_project(sql->sa, rel, outexps);
5733 55 : return rel;
5734 : }
5735 :
5736 : static sql_rel *
5737 369005 : rel_select_exp(sql_query *query, sql_rel *rel, SelectNode *sn, exp_kind ek)
5738 : {
5739 369005 : mvc *sql = query->sql;
5740 369005 : sql_rel *inner = NULL;
5741 369005 : int group_totals = 0;
5742 369005 : list *pexps = NULL;
5743 :
5744 369005 : assert(sn->s.token == SQL_SELECT);
5745 369005 : if (!sn->selection)
5746 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: the selection or from part is missing");
5747 :
5748 369005 : if (!rel)
5749 72570 : rel = rel_project_exp(sql, exp_atom_bool(sql->sa, 1));
5750 369003 : rel = rel_where_groupby_nodes(query, rel, sn, &group_totals);
5751 369003 : if (sql->session->status) /* rel might be NULL as input, so we have to check for the session status for errors */
5752 : return NULL;
5753 :
5754 368911 : inner = rel;
5755 368911 : pexps = sa_list(sql->sa);
5756 1730032 : for (dnode *n = sn->selection->h; n; n = n->next) {
5757 : /* Here we could get real column expressions
5758 : * (including single atoms) but also table results.
5759 : * Therefore we try both rel_column_exp
5760 : * and rel_table_exp.
5761 : */
5762 1362246 : list *te = NULL;
5763 2724433 : sql_exp *ce = rel_column_exp(query, &inner, n->data.sym, sql_sel | group_totals | (ek.aggr?sql_aggr:0));
5764 :
5765 1362237 : if (ce) {
5766 1304104 : if (inner && inner->flag && is_groupby(inner->op)) {
5767 62 : int found = 0;
5768 62 : list *gbe = inner->r;
5769 : /* flag == 2 just add to group by/ aggrs and ref-to pexps*/
5770 : /* flag == 1 find group by exp referencing this column nr */
5771 62 : if (inner->flag == 2) {
5772 25 : if (ce->card > CARD_AGGR) {
5773 9 : if (!gbe)
5774 8 : inner->r = gbe = sa_list(sql->sa);
5775 9 : append(gbe, ce);
5776 9 : ce = exp_ref(sql, ce);
5777 9 : ce->card = CARD_AGGR;
5778 9 : list_append(inner->exps, ce);
5779 9 : ce = exp_ref(sql, ce);
5780 9 : found = 1;
5781 : }
5782 : } else {
5783 81 : for(node *n = gbe->h; n && !found; n = n->next) {
5784 44 : sql_exp *e = n->data;
5785 44 : if (is_atom(e->type) && !e->alias.name) {
5786 29 : atom *a = e->l;
5787 29 : int nr = (int)atom_get_int(a);
5788 29 : if (nr == (list_length(pexps) + 1)) {
5789 27 : n->data = ce;
5790 27 : ce = exp_ref(sql, ce);
5791 27 : ce->card = CARD_AGGR;
5792 27 : list_append(inner->exps, ce);
5793 27 : ce = exp_ref(sql, ce);
5794 27 : found = 1;
5795 : }
5796 : }
5797 : }
5798 : }
5799 : }
5800 1304104 : pexps = append(pexps, ce);
5801 1304104 : rel = inner;
5802 1304104 : continue;
5803 : } else {
5804 63145 : te = rel_table_exp(query, &rel, n->data.sym, !list_length(pexps) && !n->next);
5805 : }
5806 58133 : if (!ce && !te) {
5807 1116 : if (sql->errstr[0])
5808 : return NULL;
5809 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: subquery result missing");
5810 : }
5811 : /* here we should merge the column expressions we
5812 : * obtained so far with the table expression, ie
5813 : * t1.* or a subquery.
5814 : */
5815 57017 : pexps = list_merge(pexps, te, (fdup)NULL);
5816 : }
5817 367786 : if (rel && is_groupby(rel->op) && rel->flag) {
5818 34 : list *gbe = rel->r;
5819 34 : if (!list_empty(gbe)) {
5820 68 : for (node *n=gbe->h; n; n = n->next) {
5821 37 : sql_exp *e = n->data;
5822 37 : if (rel->flag == 1 && is_atom(e->type) && !e->alias.name) {
5823 1 : atom *a = e->l;
5824 1 : int nr = (int)atom_get_int(a);
5825 1 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: GROUP BY position %d is not in select list", nr);
5826 : }
5827 36 : if (exp_has_aggr(rel, e))
5828 2 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: aggregate functions are not allowed in GROUP BY");
5829 : }
5830 : }
5831 : }
5832 367783 : if (rel && is_groupby(rel->op) && (!sn->groupby || rel->flag) && !is_processed(rel)) {
5833 41666 : for (node *n=pexps->h; n; n = n->next) {
5834 21296 : sql_exp *ce = n->data;
5835 21296 : if (rel->card < ce->card && !exp_is_aggr(rel, ce)) {
5836 0 : if (exp_name(ce) && !has_label(ce))
5837 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column '%s' in query results without an aggregate function", exp_name(ce));
5838 0 : return sql_error(sql, ERR_GROUPBY, SQLSTATE(42000) "SELECT: cannot use non GROUP BY column in query results without an aggregate function");
5839 : }
5840 : }
5841 20370 : set_processed(rel);
5842 : }
5843 367783 : rel = rel_project(sql->sa, rel, pexps);
5844 :
5845 367782 : rel = rel_having_limits_nodes(query, rel, sn, ek, group_totals);
5846 367782 : return rel;
5847 : }
5848 :
5849 : static sql_rel*
5850 121838 : rel_unique_names(mvc *sql, sql_rel *rel)
5851 : {
5852 121838 : list *l;
5853 :
5854 121838 : if (!is_project(rel->op))
5855 : return rel;
5856 121838 : l = sa_list(sql->sa);
5857 926362 : for (node *n = rel->exps->h; n; n = n->next) {
5858 804524 : sql_exp *e = n->data;
5859 804524 : const char *name = exp_name(e);
5860 :
5861 : /* If there are two identical expression names, there will be ambiguity */
5862 804524 : if (!name || exps_bind_column(l, name, NULL, NULL, 0))
5863 55459 : exp_label(sql->sa, e, ++sql->label);
5864 804524 : append(l,e);
5865 : }
5866 121838 : rel->exps = l;
5867 121838 : return rel;
5868 : }
5869 :
5870 : static sql_rel *
5871 369298 : rel_query(sql_query *query, symbol *sq, exp_kind ek)
5872 : {
5873 369298 : mvc *sql = query->sql;
5874 369298 : sql_rel *res = NULL;
5875 369298 : SelectNode *sn = NULL;
5876 :
5877 369298 : if (sq->token != SQL_SELECT)
5878 22 : return table_ref(query, sq, 0, NULL);
5879 :
5880 : /* select ... into is currently not handled here ! */
5881 369276 : sn = (SelectNode *) sq;
5882 369276 : if (sn->into)
5883 : return NULL;
5884 :
5885 369276 : if (ek.card != card_relation && sn->orderby)
5886 0 : return sql_error(sql, 01, SQLSTATE(42000) "SELECT: ORDER BY only allowed on outermost SELECT");
5887 :
5888 369276 : if (sn->window) {
5889 20 : dlist *wl = sn->window->data.lval;
5890 51 : for (dnode *n = wl->h; n ; n = n->next) {
5891 32 : dlist *wd = n->data.sym->data.lval;
5892 32 : const char *name = wd->h->data.sval;
5893 32 : dlist *wdef = wd->h->next->data.lval;
5894 32 : if (frame_get_window_def(sql, name, NULL)) {
5895 1 : return sql_error(sql, 01, SQLSTATE(42000) "SELECT: Redefinition of window '%s'", name);
5896 31 : } else if (!frame_push_window_def(sql, name, wdef)) {
5897 0 : return sql_error(sql, 02, SQLSTATE(HY013) MAL_MALLOC_FAIL);
5898 : }
5899 : }
5900 : }
5901 :
5902 369275 : if (sn->from) {
5903 296705 : dlist *fl = sn->from->data.lval;
5904 296705 : sql_rel *fnd = NULL;
5905 296705 : list *refs = new_exp_list(sql->sa); /* Keep list of relation names in order to test for duplicates */
5906 :
5907 735576 : for (dnode *n = fl->h; n ; n = n->next) {
5908 439141 : int lateral = check_is_lateral(n->data.sym);
5909 :
5910 : /* just used current expression */
5911 439141 : if (lateral && res)
5912 11 : query_push_outer(query, res, sql_from);
5913 439141 : fnd = table_ref(query, n->data.sym, lateral, refs);
5914 439141 : if (lateral && res)
5915 11 : res = query_pop_outer(query);
5916 439141 : if (!fnd)
5917 : break;
5918 438871 : if (res) {
5919 142422 : res = rel_crossproduct(sql->sa, res, fnd, op_join);
5920 142422 : if (lateral)
5921 11 : set_dependent(res);
5922 : } else {
5923 : res = fnd;
5924 : }
5925 : }
5926 296705 : if (!fnd) {
5927 270 : if (res)
5928 14 : rel_destroy(res);
5929 270 : return NULL;
5930 : }
5931 72570 : } else if (!query_has_outer(query) || !res) {/* only on top level query */
5932 72570 : return rel_select_exp(query, NULL, sn, ek);
5933 : }
5934 :
5935 296435 : sql_rel *rel = NULL;
5936 296435 : if (res)
5937 296435 : rel = rel_select_exp(query, res, sn, ek);
5938 296435 : if (!rel && res)
5939 1048 : rel_destroy(res);
5940 : return rel;
5941 : }
5942 :
5943 : /* NOTE: does NOT "set" query but instead generate set ops (union, except, intersect) */
5944 : static sql_rel *
5945 23 : rel_setquery_corresponding(sql_query *query, sql_rel *l, sql_rel *r, dlist *cols, int op, int outer, bool n_ary_op)
5946 : {
5947 23 : mvc *sql = query->sql;
5948 23 : const char *opname = op==SQL_EXCEPT?"EXCEPT":op==SQL_INTERSECT?"INTERSECT":outer?"OUTER UNION":"UNION";
5949 23 : list *lexps = sa_list(query->sql->sa), *rexps = sa_list(query->sql->sa);
5950 23 : if (!lexps || !rexps)
5951 : return NULL;
5952 23 : assert(cols);
5953 23 : if (dlist_length(cols)) {
5954 22 : for (dnode *dn = cols->h; dn; dn = dn ->next) {
5955 13 : char *nm = dn->data.sym->data.lval->h->data.sval;
5956 13 : sql_exp *ls, *rs;
5957 :
5958 13 : if (!(ls = rel_bind_column(sql, l, nm, sql_where | sql_join, 0)) && sql->session->status == -ERR_AMBIGUOUS)
5959 : return NULL;
5960 13 : if (!(rs = rel_bind_column(sql, r, nm, sql_where | sql_join, 0)) && sql->session->status == -ERR_AMBIGUOUS)
5961 : return NULL;
5962 13 : if ((!outer && (!ls || !rs)) || (outer && !ls && !rs))
5963 2 : return sql_error(sql, 02, SQLSTATE(42000) "%s: tables '%s' and '%s' do not have a matching column '%s'", opname, rel_name(l)?rel_name(l):"", rel_name(r)?rel_name(r):"", nm);
5964 11 : if (outer && !ls)
5965 4 : ls = exp_null(sql->sa, exp_subtype(rs));
5966 11 : if (outer && !rs)
5967 4 : rs = exp_null(sql->sa, exp_subtype(ls));
5968 11 : append(lexps, ls);
5969 11 : append(rexps, rs);
5970 : }
5971 : } else {
5972 12 : int found = 0;
5973 12 : list *exps = rel_projections(sql, l, NULL, 1, 0), *r_exps = rel_projections(sql, r, NULL, 1, 0);
5974 12 : if (!exps || !r_exps)
5975 : return NULL;
5976 : /* find cols which exist on both sides */
5977 35 : for (node *n = exps->h; n; n = n->next) {
5978 23 : sql_exp *le = n->data;
5979 23 : int multi = 0;
5980 23 : const char *rname = exp_relname(le), *name = exp_name(le);
5981 23 : sql_exp *re = exps_bind_column(r_exps, name, NULL, &multi, 0);
5982 23 : if (re) {
5983 13 : if (multi)
5984 0 : return sql_error(sql, ERR_AMBIGUOUS, SQLSTATE(42000) "%s: common column name '%s' appears more than once in right table", opname, rname);
5985 13 : multi = 0;
5986 13 : le = exps_bind_column(exps, name, NULL, &multi, 0);
5987 13 : if (multi)
5988 0 : return sql_error(sql, ERR_AMBIGUOUS, SQLSTATE(42000) "%s: common column name '%s' appears more than once in left table", opname, rname);
5989 :
5990 13 : found = 1;
5991 13 : append(lexps, le);
5992 13 : append(rexps, re);
5993 13 : list_remove_data(r_exps, NULL, re);
5994 10 : } else if (outer) {
5995 3 : append(lexps, le);
5996 3 : re = exp_null(sql->sa, exp_subtype(le));
5997 3 : append(rexps, re); /* nils */
5998 : }
5999 : }
6000 12 : if (!found)
6001 0 : return sql_error(sql, 02, SQLSTATE(42000) "%s: no columns of tables '%s' and '%s' match", opname, rel_name(l)?rel_name(l):"", rel_name(r)?rel_name(r):"");
6002 12 : if (outer) {
6003 7 : for (node *n = r_exps->h; n; n = n->next) {
6004 4 : sql_exp *re = n->data, *le;
6005 4 : append(rexps, re);
6006 4 : le = exp_null(sql->sa, exp_subtype(re));
6007 4 : append(lexps, le); /* nils */
6008 : }
6009 : }
6010 : }
6011 21 : return n_ary_op ?
6012 21 : rel_setop_n_ary_check_types(sql, l, r, lexps, rexps, (operator_type)op) :
6013 2 : rel_setop_check_types(sql, l, r, lexps, rexps, (operator_type)op);
6014 : }
6015 :
6016 : static sql_rel *
6017 2481 : rel_setquery_(sql_query *query, sql_rel *l, sql_rel *r, dlist *cols, int op, int outer)
6018 : {
6019 2481 : mvc *sql = query->sql;
6020 2481 : sql_rel *rel;
6021 :
6022 2481 : if (outer && !cols)
6023 0 : return sql_error(sql, 02, SQLSTATE(42000) "UNION: OUTER needs to be combined with CORRESPONDING [ BY ( column list ) ]");
6024 2481 : if (!cols) {
6025 2479 : list *ls, *rs;
6026 :
6027 2479 : l = rel_unique_names(sql, l);
6028 2479 : r = rel_unique_names(sql, r);
6029 2479 : ls = rel_projections(sql, l, NULL, 0, 1);
6030 2479 : rs = rel_projections(sql, r, NULL, 0, 1);
6031 2479 : rel = rel_setop_check_types(sql, l, r, ls, rs, (operator_type)op);
6032 : } else {
6033 2 : rel = rel_setquery_corresponding(query, l, r, cols, op, outer, false);
6034 : }
6035 2481 : if (rel) {
6036 2478 : rel_setop_set_exps(sql, rel, rel_projections(sql, rel, NULL, 0, 1), false);
6037 2478 : set_processed(rel);
6038 : }
6039 : return rel;
6040 : }
6041 :
6042 : /* Generate n-ary set operator */
6043 : static sql_rel *
6044 58461 : rel_setquery_n_ary_(sql_query *query, sql_rel *l, sql_rel *r, dlist *cols, int op, int outer)
6045 : {
6046 : /* even though this is for a general n-ary operators in this phase of the query
6047 : * processing we gonna have only two operands (so technically it's binary). In
6048 : * general this op supports arbitrary number of operands.
6049 : */
6050 : // TODO: for now we support only multi-union
6051 58461 : assert(op == op_munion);
6052 :
6053 58461 : mvc *sql = query->sql;
6054 58461 : sql_rel *rel;
6055 :
6056 58461 : if (outer && !cols)
6057 0 : return sql_error(sql, 02, SQLSTATE(42000) "UNION: OUTER needs to be combined with CORRESPONDING [ BY ( column list ) ]");
6058 58461 : if (!cols) {
6059 : // TODO: make rel_setop_n_ary_check_types to accept a list of rels
6060 : // and a list of lists of exps
6061 58440 : list *ls, *rs;
6062 :
6063 58440 : l = rel_unique_names(sql, l);
6064 58440 : r = rel_unique_names(sql, r);
6065 58440 : ls = rel_projections(sql, l, NULL, 0, 1);
6066 58440 : rs = rel_projections(sql, r, NULL, 0, 1);
6067 58440 : rel = rel_setop_n_ary_check_types(sql, l, r, ls, rs, (operator_type)op);
6068 : } else {
6069 21 : rel = rel_setquery_corresponding(query, l, r, cols, op, outer, true);
6070 : }
6071 :
6072 58461 : if (rel) {
6073 58455 : rel_setop_n_ary_set_exps(sql, rel, rel_projections(sql, rel, NULL, 0, 1), false);
6074 58455 : set_processed(rel);
6075 : }
6076 :
6077 : return rel;
6078 :
6079 : }
6080 :
6081 : static sql_rel *
6082 60949 : rel_setquery(sql_query *query, symbol *q)
6083 : {
6084 60949 : mvc *sql = query->sql;
6085 60949 : sql_rel *res = NULL;
6086 60949 : dnode *n = q->data.lval->h;
6087 60949 : symbol *tab_ref1 = n->data.sym;
6088 60949 : int distinct = n->next->data.i_val;
6089 60949 : dlist *corresponding = n->next->next->data.lval;
6090 60949 : symbol *tab_ref2 = n->next->next->next->data.sym;
6091 60949 : sql_rel *t1, *t2;
6092 :
6093 60949 : assert(n->next->type == type_int);
6094 60949 : t1 = table_ref(query, tab_ref1, 0, NULL);
6095 60949 : if (!t1)
6096 : return NULL;
6097 60945 : t2 = table_ref(query, tab_ref2, 0, NULL);
6098 60945 : if (!t2)
6099 : return NULL;
6100 :
6101 60943 : rel_remove_internal_exp(t1);
6102 60943 : rel_remove_internal_exp(t2);
6103 60943 : if (!corresponding && list_length(t1->exps) != list_length(t2->exps)) {
6104 1 : int t1nrcols = list_length(t1->exps);
6105 1 : int t2nrcols = list_length(t2->exps);
6106 1 : const char *op = "UNION";
6107 1 : if (q->token == SQL_EXCEPT)
6108 : op = "EXCEPT";
6109 0 : else if (q->token == SQL_INTERSECT)
6110 0 : op = "INTERSECT";
6111 1 : rel_destroy(t1);
6112 1 : rel_destroy(t2);
6113 1 : return sql_error(sql, 02, SQLSTATE(42000) "%s: column counts (%d and %d) do not match", op, t1nrcols, t2nrcols);
6114 : }
6115 60942 : if ( q->token == SQL_UNION) {
6116 58461 : int outer = n->next->next->next->next->data.i_val;
6117 : /* For EXCEPT/INTERSECT the group by is always done within the implementation */
6118 : /* TODO add those later in an optimizer ! */
6119 58461 : if (t1 && distinct)
6120 2006 : t1 = rel_distinct(t1);
6121 58461 : if (t2 && distinct)
6122 2006 : t2 = rel_distinct(t2);
6123 : // TODO: this has to be fixed
6124 : /*res = rel_setquery_(query, t1, t2, corresponding, op_union, outer);*/
6125 58461 : res = rel_setquery_n_ary_(query, t1, t2, corresponding, op_munion, outer);
6126 2481 : } else if ( q->token == SQL_EXCEPT)
6127 2023 : res = rel_setquery_(query, t1, t2, corresponding, op_except, 0);
6128 458 : else if ( q->token == SQL_INTERSECT)
6129 458 : res = rel_setquery_(query, t1, t2, corresponding, op_inter, 0);
6130 60942 : if (res) {
6131 60933 : set_processed(res);
6132 60933 : if (distinct)
6133 4361 : res = rel_distinct(res);
6134 : }
6135 : return res;
6136 : }
6137 :
6138 : static sql_rel *
6139 58718 : rel_joinquery_(sql_query *query, symbol *tab1, int natural, jt jointype, symbol *tab2, symbol *js, list *refs)
6140 : {
6141 58718 : mvc *sql = query->sql;
6142 58718 : operator_type op = op_join;
6143 58718 : sql_rel *t1 = NULL, *t2 = NULL, *inner, *rel = NULL;
6144 58718 : int l_nil = 0, r_nil = 0, lateral = 0;
6145 :
6146 58718 : switch(jointype) {
6147 : case jt_inner:
6148 : case jt_cross: op = op_join;
6149 : break;
6150 : case jt_left: op = op_left;
6151 : r_nil = 1;
6152 : break;
6153 : case jt_right: op = op_right;
6154 : l_nil = 1;
6155 : break;
6156 : case jt_full: op = op_full;
6157 : l_nil = 1;
6158 : r_nil = 1;
6159 : break;
6160 : }
6161 :
6162 : /* a dependent join cannot depend on the right side, so disable lateral check for right and full joins */
6163 58718 : lateral = (op == op_join || op == op_left) && check_is_lateral(tab2);
6164 58718 : t1 = table_ref(query, tab1, 0, refs);
6165 58718 : if (t1) {
6166 58713 : if (!lateral) {
6167 58678 : t2 = table_ref(query, tab2, 0, refs);
6168 : } else {
6169 35 : query_processed(query);
6170 35 : query_push_outer(query, t1, sql_from);
6171 35 : t2 = table_ref(query, tab2, 0, refs);
6172 35 : t1 = query_pop_outer(query);
6173 : }
6174 : }
6175 58718 : if (!t1 || !t2)
6176 : return NULL;
6177 :
6178 58695 : query_processed(query);
6179 58695 : if (strcmp(rel_name(t1), rel_name(t2)) == 0) {
6180 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: ERROR: table name '%s' specified more than once", rel_name(t1));
6181 : }
6182 58695 : inner = rel = rel_crossproduct(sql->sa, t1, t2, op);
6183 58695 : if (!rel)
6184 : return NULL;
6185 58695 : if (lateral)
6186 34 : set_dependent(rel);
6187 :
6188 58695 : assert(jointype != jt_cross || (!natural && !js)); /* there are no natural cross joins, or cross joins with conditions */
6189 58695 : if (js && natural)
6190 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: cannot have a NATURAL JOIN with a join specification (ON or USING)");
6191 58695 : if (jointype != jt_cross && !js && !natural)
6192 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: must have NATURAL JOIN or a JOIN with a join specification (ON or USING)");
6193 :
6194 58695 : if (js && js->token != SQL_USING) { /* On sql_logical_exp */
6195 58524 : rel = rel_logical_exp(query, rel, js, sql_where | sql_join);
6196 171 : } else if (js) { /* using */
6197 20 : char rname[16], *rnme;
6198 20 : dnode *n = js->data.lval->h;
6199 20 : list *outexps = new_exp_list(sql->sa), *exps;
6200 20 : node *m;
6201 :
6202 20 : rnme = sa_strdup(sql->sa, number2name(rname, sizeof(rname), ++sql->label));
6203 46 : for (; n; n = n->next) {
6204 26 : char *nm = n->data.sval;
6205 26 : sql_exp *cond, *ls, *rs;
6206 :
6207 26 : if (!(ls = rel_bind_column(sql, t1, nm, sql_where | sql_join, 0)) && sql->session->status == -ERR_AMBIGUOUS)
6208 0 : return NULL;
6209 26 : if (!(rs = rel_bind_column(sql, t2, nm, sql_where | sql_join, 0)) && sql->session->status == -ERR_AMBIGUOUS)
6210 : return NULL;
6211 26 : if (!ls || !rs)
6212 0 : return sql_error(sql, 02, SQLSTATE(42000) "JOIN: tables '%s' and '%s' do not have a matching column '%s'", rel_name(t1)?rel_name(t1):"", rel_name(t2)?rel_name(t2):"", nm);
6213 26 : if (!(rel = rel_compare_exp(query, rel, ls, rs, "=", TRUE, 0, 0, 0, 0)))
6214 : return NULL;
6215 26 : if (op != op_join) {
6216 12 : if (!(cond = rel_unop_(sql, rel, ls, "sys", "isnull", card_value)))
6217 : return NULL;
6218 12 : set_has_no_nil(cond);
6219 12 : if (rel_convert_types(sql, t1, t2, &ls, &rs, 1, type_equal) < 0)
6220 : return NULL;
6221 12 : if (!(ls = rel_nop_(sql, rel, cond, rs, ls, NULL, "sys", "ifthenelse", card_value)))
6222 : return NULL;
6223 : }
6224 26 : exp_setname(sql, ls, rnme, nm);
6225 26 : append(outexps, ls);
6226 26 : if (!rel)
6227 : return NULL;
6228 : }
6229 20 : exps = rel_projections(sql, t1, NULL, 1, 1);
6230 199 : for (m = exps->h; m; m = m->next) {
6231 179 : const char *nm = exp_name(m->data);
6232 179 : int fnd = 0;
6233 :
6234 429 : for (n = js->data.lval->h; n; n = n->next) {
6235 276 : if (strcmp(nm, n->data.sval) == 0) {
6236 : fnd = 1;
6237 : break;
6238 : }
6239 : }
6240 179 : if (!fnd) {
6241 153 : sql_exp *ls = m->data;
6242 153 : if (l_nil)
6243 18 : set_has_nil(ls);
6244 153 : set_not_unique(ls);
6245 153 : append(outexps, ls);
6246 : }
6247 : }
6248 20 : exps = rel_projections(sql, t2, NULL, 1, 1);
6249 100 : for (m = exps->h; m; m = m->next) {
6250 80 : const char *nm = exp_name(m->data);
6251 80 : int fnd = 0;
6252 :
6253 230 : for (n = js->data.lval->h; n; n = n->next) {
6254 176 : if (strcmp(nm, n->data.sval) == 0) {
6255 : fnd = 1;
6256 : break;
6257 : }
6258 : }
6259 80 : if (!fnd) {
6260 54 : sql_exp *rs = m->data;
6261 54 : if (r_nil)
6262 14 : set_has_nil(rs);
6263 54 : set_not_unique(rs);
6264 54 : append(outexps, rs);
6265 : }
6266 : }
6267 20 : rel = rel_project(sql->sa, rel, outexps);
6268 151 : } else if (jointype != jt_cross) { /* ! js -> natural join */
6269 60 : rel = join_on_column_name(query, rel, t1, t2, op, l_nil, r_nil);
6270 : }
6271 58695 : if (!rel)
6272 : return NULL;
6273 58677 : if (inner && is_outerjoin(inner->op))
6274 21689 : set_processed(inner);
6275 58677 : set_processed(rel);
6276 58677 : query_processed(query);
6277 58677 : return rel;
6278 : }
6279 :
6280 : static sql_rel *
6281 58718 : rel_joinquery(sql_query *query, symbol *q, list *refs)
6282 : {
6283 58718 : dnode *n = q->data.lval->h;
6284 58718 : symbol *tab_ref1 = n->data.sym;
6285 58718 : int natural = n->next->data.i_val;
6286 58718 : jt jointype = (jt) n->next->next->data.i_val;
6287 58718 : symbol *tab_ref2 = n->next->next->next->data.sym;
6288 58718 : symbol *joinspec = n->next->next->next->next->data.sym;
6289 :
6290 58718 : assert(n->next->type == type_int);
6291 58718 : assert(n->next->next->type == type_int);
6292 58718 : return rel_joinquery_(query, tab_ref1, natural, jointype, tab_ref2, joinspec, refs);
6293 : }
6294 :
6295 : sql_rel *
6296 369298 : rel_subquery(sql_query *query, symbol *sq, exp_kind ek)
6297 : {
6298 369298 : mvc *sql = query->sql;
6299 :
6300 369298 : query_processed(query);
6301 369298 : if (!stack_push_frame(sql, NULL))
6302 0 : return sql_error(sql, 02, SQLSTATE(HY013) MAL_MALLOC_FAIL);
6303 369296 : sql_rel *rel = rel_query(query, sq, ek);
6304 369296 : stack_pop_frame(sql);
6305 369298 : if (!query_has_outer(query))
6306 333247 : query_processed(query);
6307 369298 : if (rel && ek.type == type_relation && ek.card < card_set && rel->card >= CARD_AGGR)
6308 15 : return rel_zero_or_one(sql, rel, ek);
6309 : return rel;
6310 : }
6311 :
6312 : sql_rel *
6313 238368 : rel_selects(sql_query *query, symbol *s)
6314 : {
6315 238368 : mvc *sql = query->sql;
6316 238368 : sql_rel *ret = NULL;
6317 :
6318 238368 : switch (s->token) {
6319 5663 : case SQL_WITH:
6320 5663 : ret = rel_with_query(query, s);
6321 5663 : sql->type = Q_TABLE;
6322 5663 : break;
6323 2177 : case SQL_VALUES:
6324 2177 : ret = rel_values(query, s, NULL);
6325 2177 : sql->type = Q_TABLE;
6326 2177 : break;
6327 211387 : case SQL_SELECT: {
6328 211387 : exp_kind ek = {type_value, card_relation, TRUE};
6329 211387 : SelectNode *sn = (SelectNode *) s;
6330 :
6331 211387 : if (sn->into) {
6332 1 : sql->type = Q_SCHEMA;
6333 1 : ret = rel_select_with_into(query, s);
6334 : } else {
6335 211386 : ret = rel_subquery(query, s, ek);
6336 211386 : sql->type = Q_TABLE;
6337 : }
6338 211387 : } break;
6339 0 : case SQL_JOIN:
6340 0 : ret = rel_joinquery(query, s, NULL);
6341 0 : sql->type = Q_TABLE;
6342 0 : break;
6343 19141 : case SQL_UNION:
6344 : case SQL_EXCEPT:
6345 : case SQL_INTERSECT:
6346 19141 : ret = rel_setquery(query, s);
6347 19141 : sql->type = Q_TABLE;
6348 19141 : break;
6349 : default:
6350 : return NULL;
6351 : }
6352 238368 : if (!ret && sql->errstr[0] == 0)
6353 0 : (void) sql_error(sql, 02, SQLSTATE(42000) "relational query without result");
6354 : return ret;
6355 : }
6356 :
6357 : sql_rel *
6358 79046 : schema_selects(sql_query *query, sql_schema *schema, symbol *s)
6359 : {
6360 79046 : mvc *sql = query->sql;
6361 79046 : sql_rel *res;
6362 79046 : sql_schema *os = cur_schema(sql);
6363 :
6364 79046 : sql->session->schema = schema;
6365 79046 : res = rel_selects(query, s);
6366 79046 : sql->session->schema = os;
6367 79046 : return res;
6368 : }
6369 :
6370 : sql_rel *
6371 26 : rel_loader_function(sql_query *query, symbol* fcall, list *fexps, sql_subfunc **loader_function)
6372 : {
6373 26 : mvc *sql = query->sql;
6374 26 : sql_rel *sq = NULL;
6375 26 : dnode *l = fcall->data.lval->h;
6376 26 : char *sname = qname_schema(l->data.lval);
6377 26 : char *fname = qname_schema_object(l->data.lval);
6378 :
6379 26 : list *tl = sa_list(sql->sa);
6380 26 : list *exps = sa_list(sql->sa);
6381 26 : if (l->next)
6382 26 : l = l->next; /* skip distinct */
6383 26 : if (l->next) { /* table call with subquery */
6384 22 : if (l->next->type == type_symbol || l->next->type == type_list) {
6385 22 : int count = 0;
6386 22 : symbol *subquery = NULL;
6387 22 : dnode *n = NULL;
6388 :
6389 22 : if (l->next->type == type_symbol)
6390 : n = l->next;
6391 : else
6392 1 : n = l->next->data.lval->h;
6393 :
6394 66 : for (dnode *m = n; m; m = m->next) {
6395 44 : if (m->type == type_symbol && m->data.sym->token == SQL_SELECT)
6396 44 : subquery = m->data.sym;
6397 44 : count++;
6398 : }
6399 22 : if (subquery && count > 1)
6400 0 : return sql_error(sql, 02, SQLSTATE(42000) "SELECT: The input for the loader function '%s' must be either a single sub query, or a list of values", fname);
6401 :
6402 22 : if (subquery) {
6403 0 : exp_kind ek = { type_value, card_relation, TRUE };
6404 0 : if (!(sq = rel_subquery(query, subquery, ek)))
6405 0 : return NULL;
6406 : } else {
6407 22 : exp_kind ek = { type_value, card_column, TRUE };
6408 22 : list *exps = sa_list(sql->sa);
6409 88 : for ( ; n; n = n->next) {
6410 44 : sql_exp *e = rel_value_exp(query, NULL, n->data.sym, sql_sel | sql_from, ek);
6411 :
6412 44 : if (!e)
6413 0 : return NULL;
6414 44 : append(exps, e);
6415 : }
6416 22 : sq = rel_project(sql->sa, NULL, exps);
6417 : }
6418 : }
6419 22 : if (!sq)
6420 0 : return sql_error(sql, ERR_NOTFOUND, SQLSTATE(42000) "SELECT: no such loader function %s%s%s'%s'", sname ? "'":"", sname ? sname : "", sname ? "'.":"", fname);
6421 66 : for (node *en = sq->exps->h; en; en = en->next) {
6422 44 : sql_exp *e = en->data;
6423 :
6424 44 : append(exps, e = exp_ref(sql, e));
6425 44 : append(tl, exp_subtype(e));
6426 : }
6427 : }
6428 :
6429 26 : sql_exp *e = NULL;
6430 26 : if (!(e = find_table_function(sql, sname, fname, exps, tl, F_LOADER)))
6431 : return NULL;
6432 25 : sql_subfunc *sf = e->f;
6433 25 : if (sq) {
6434 66 : for (node *n = sq->exps->h, *m = sf->func->ops->h ; n && m ; n = n->next, m = m->next) {
6435 44 : sql_exp *e = (sql_exp*) n->data;
6436 44 : sql_arg *a = (sql_arg*) m->data;
6437 44 : if (!exp_subtype(e) && rel_set_type_param(sql, &(a->type), sq, e, 0) < 0)
6438 : return NULL;
6439 : }
6440 : }
6441 :
6442 25 : if (loader_function)
6443 25 : *loader_function = sf;
6444 :
6445 28 : return rel_table_func(sql->sa, sq, e, fexps, (sq)?TABLE_FROM_RELATION:TABLE_PROD_FUNC);
6446 : }
|
