November 2013 - users-list

[MonetDB-users] Books CDs
by CHARTS LICENSING 11 Aug '24

11 Aug '24

Everything you want to know this dynamic artist check. At blueberry hills duck, roomfull story gtgt getting. Intriguing, life in biography. Here music looking for lyrics maybe, youre find which! Download free wallpapers featuring business cmg worldwide is exclusive. Videos latest products been easier. Exclusive estate we consider request use name voice, image. List covered berries charts licensing message! Reelin and rockin about, has everything you? Many exciting, photos him stage click! … [View More]

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[MonetDB-users] XQuery API and XLink/XUpdate support
by Alexandra Mart�nez 27 Jun '24

27 Jun '24

Hello all, I was wondering if there is any documentation about the API for XQuery (i.e., how to write xqueries from a Java program). Also, I am interested in using some features of XLink and XUpdate on top of my XML database. Is support for any of these in progress? Thanks in advance, Alexandra ______________________________________________________ Click here to donate to the Hurricane Katrina relief effort. http://store.yahoo.com/redcross-donate3/

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[MonetDB-users] Proofreading your professional documents
by Richard Hounslow 24 Feb '24

24 Feb '24

Dear Professor/Lecturer Please excuse us for contacting you directly. We are offering an efficient service to help you ensure your academic and professional work is written in perfect English. We will check the grammar and style of your work and return it to you to meet your requirements and deadlines. Proof-Reading-Service.com can provide you with a professional proofreading service at a very reasonable rate. All our proofreaders are highly qualified native English speakers. Many work as … [View More]

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I can integrate monetdb as hadoop?
by Edgar Mejia 02 Dec '13

02 Dec '13

if for example i have 300 millions of rows, i need to use something as hadoop? is posible integrate monetdb as hadoop? if i use only monetdb, and i have 300 millions of rows, how much memory and processor is recommended as minimum? Thanks, EM

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Very different query speeds for two similar queries
by Will Muldrew 02 Dec '13

02 Dec '13

Hi I've been trying out monetdb on a 350M row table (modern linux workstation with 24GB RAM + SSD). This table has a sorted TIMESTAMP column and a second unsorted VARCHAR(6) column which is non-unique (perhaps 50M distinct values fairly randomly distributed). This query is very slow, spends huge amount of time writing, and has very low CPU (intermediate results?): select count(*) from t_order where orderId = 'XXXXXX' This takes hours to complete. However, this query is a lot faster, … [View More]even though the timestamp clause is redundant (all my data is > '2012-01-01'): select count(*) from t_order where orderId = 'XXXXXX' and time > '1970-01-01'; The first run is slowish (10s of seconds - I guess because we're reading the orderId column fully), however subsequent runs are sub-second. Obviously I could write an app which puts the spurious timestamp clause into the where, but it's still confusing and not ideal. Is there something I can do? The EXPLAINs are: sql>explain select count(*) from t_order where orderId = 'XXXXXX' and time > '1970-01-01'; +-------------------------------------------------------------------------------------------------------------------------+ | mal | +=========================================================================================================================+ | function user.s9_3{autoCommit=true}(A0:str,A1:str):void; | | X_14 := nil:wrd; | | barrier X_263 := language.dataflow(); | | X_4 := sql.mvc(); | | X_68:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,0,16); | | X_132 := X_68; | | X_101:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,0,16); | | X_164 := X_101; | | X_35:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",0,16); | | X_10 := calc.timestamp(A1,7); | | X_180 := algebra.thetasubselect(X_164,X_35,X_10,">"); | | X_197 := algebra.subselect(X_132,X_180,A0,A0,true,true,false); | | X_228 := algebra.leftfetchjoin(X_197,X_164); | | X_246 := aggr.count(X_228); | | X_70:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,1,16); | | X_133 := X_70; | | X_103:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,1,16); | | X_165 := X_103; | | X_37:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",1,16); | | X_181 := algebra.thetasubselect(X_165,X_37,X_10,">"); | | X_199 := algebra.subselect(X_133,X_181,A0,A0,true,true,false); | | X_229 := algebra.leftfetchjoin(X_199,X_165); | | X_247 := aggr.count(X_229); | | X_72:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,2,16); | | X_134 := X_72; | | X_105:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,2,16); | | X_166 := X_105; | | X_39:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",2,16); | | X_182 := algebra.thetasubselect(X_166,X_39,X_10,">"); | | X_201 := algebra.subselect(X_134,X_182,A0,A0,true,true,false); | | X_230 := algebra.leftfetchjoin(X_201,X_166); | | X_248 := aggr.count(X_230); | | X_74:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,3,16); | | X_135 := X_74; | | X_107:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,3,16); | | X_167 := X_107; | | X_41:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",3,16); | | X_183 := algebra.thetasubselect(X_167,X_41,X_10,">"); | | X_203 := algebra.subselect(X_135,X_183,A0,A0,true,true,false); | | X_231 := algebra.leftfetchjoin(X_203,X_167); | | X_249 := aggr.count(X_231); | | X_76:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,4,16); | | X_136 := X_76; | | X_109:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,4,16); | | X_168 := X_109; | | X_43:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",4,16); | | X_184 := algebra.thetasubselect(X_168,X_43,X_10,">"); | | X_205 := algebra.subselect(X_136,X_184,A0,A0,true,true,false); | | X_232 := algebra.leftfetchjoin(X_205,X_168); | | X_250 := aggr.count(X_232); | | X_78:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,5,16); | | X_137 := X_78; | | X_111:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,5,16); | | X_169 := X_111; | | X_45:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",5,16); | | X_185 := algebra.thetasubselect(X_169,X_45,X_10,">"); | | X_207 := algebra.subselect(X_137,X_185,A0,A0,true,true,false); | | X_233 := algebra.leftfetchjoin(X_207,X_169); | | X_251 := aggr.count(X_233); | | X_80:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,6,16); | | X_138 := X_80; | | X_113:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,6,16); | | X_170 := X_113; | | X_47:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",6,16); | | X_186 := algebra.thetasubselect(X_170,X_47,X_10,">"); | | X_209 := algebra.subselect(X_138,X_186,A0,A0,true,true,false); | | X_234 := algebra.leftfetchjoin(X_209,X_170); | | X_252 := aggr.count(X_234); | | X_82:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,7,16); | | X_139 := X_82; | | X_115:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,7,16); | | X_171 := X_115; | | X_49:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",7,16); | | X_187 := algebra.thetasubselect(X_171,X_49,X_10,">"); | | X_211 := algebra.subselect(X_139,X_187,A0,A0,true,true,false); | | X_235 := algebra.leftfetchjoin(X_211,X_171); | | X_253 := aggr.count(X_235); | | X_84:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,8,16); | | X_140 := X_84; | | X_117:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,8,16); | | X_172 := X_117; | | X_51:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",8,16); | | X_188 := algebra.thetasubselect(X_172,X_51,X_10,">"); | | X_213 := algebra.subselect(X_140,X_188,A0,A0,true,true,false); | | X_236 := algebra.leftfetchjoin(X_213,X_172); | | X_254 := aggr.count(X_236); | | X_86:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,9,16); | | X_141 := X_86; | | X_119:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,9,16); | | X_173 := X_119; | | X_53:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",9,16); | | X_189 := algebra.thetasubselect(X_173,X_53,X_10,">"); | | X_215 := algebra.subselect(X_141,X_189,A0,A0,true,true,false); | | X_237 := algebra.leftfetchjoin(X_215,X_173); | | X_255 := aggr.count(X_237); | | X_88:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,10,16); | | X_142 := X_88; | | X_121:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,10,16); | | X_174 := X_121; | | X_55:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",10,16); | | X_190 := algebra.thetasubselect(X_174,X_55,X_10,">"); | | X_217 := algebra.subselect(X_142,X_190,A0,A0,true,true,false); | | X_238 := algebra.leftfetchjoin(X_217,X_174); | | X_256 := aggr.count(X_238); | | X_90:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,11,16); | | X_143 := X_90; | | X_123:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,11,16); | | X_175 := X_123; | | X_57:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",11,16); | | X_191 := algebra.thetasubselect(X_175,X_57,X_10,">"); | | X_219 := algebra.subselect(X_143,X_191,A0,A0,true,true,false); | | X_239 := algebra.leftfetchjoin(X_219,X_175); | | X_257 := aggr.count(X_239); | | X_92:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,12,16); | | X_144 := X_92; | | X_125:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,12,16); | | X_176 := X_125; | | X_59:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",12,16); | | X_192 := algebra.thetasubselect(X_176,X_59,X_10,">"); | | X_221 := algebra.subselect(X_144,X_192,A0,A0,true,true,false); | | X_240 := algebra.leftfetchjoin(X_221,X_176); | | X_258 := aggr.count(X_240); | | X_94:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,13,16); | | X_145 := X_94; | | X_127:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,13,16); | | X_177 := X_127; | | X_61:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",13,16); | | X_193 := algebra.thetasubselect(X_177,X_61,X_10,">"); | | X_223 := algebra.subselect(X_145,X_193,A0,A0,true,true,false); | | X_241 := algebra.leftfetchjoin(X_223,X_177); | | X_259 := aggr.count(X_241); | | X_96:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,14,16); | | X_146 := X_96; | | X_129:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,14,16); | | X_178 := X_129; | | X_63:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",14,16); | | X_194 := algebra.thetasubselect(X_178,X_63,X_10,">"); | | X_225 := algebra.subselect(X_146,X_194,A0,A0,true,true,false); | | X_242 := algebra.leftfetchjoin(X_225,X_178); | | X_260 := aggr.count(X_242); | | X_98:bat[:oid,:str] := sql.bind(X_4,"sys","t_order","orderid",0,15,16); | | X_147 := X_98; | | X_131:bat[:oid,:timestamp] := sql.bind(X_4,"sys","t_order","time",0,15,16); | | X_179 := X_131; | | X_65:bat[:oid,:oid] := sql.tid(X_4,"sys","t_order",15,16); | | X_195 := algebra.thetasubselect(X_179,X_65,X_10,">"); | | X_227 := algebra.subselect(X_147,X_195,A0,A0,true,true,false); | | X_243 := algebra.leftfetchjoin(X_227,X_179); | | X_261 := aggr.count(X_243); | | X_245 := mat.pack(X_246,X_247,X_248,X_249,X_250,X_251,X_252,X_253,X_254,X_255,X_256,X_257,X_258,X_259,X_260,X_261); | | X_262 := algebra.selectNotNil(X_245); | | X_14 := aggr.sum(X_262); | | language.pass(X_164); | | language.pass(X_165); | | language.pass(X_166); | | language.pass(X_167); | | language.pass(X_168); | | language.pass(X_169); | | language.pass(X_170); | | language.pass(X_171); | | language.pass(X_172); | | language.pass(X_173); | | language.pass(X_174); | | language.pass(X_175); | | language.pass(X_176); | | language.pass(X_177); | | language.pass(X_178); | | language.pass(X_179); | | exit X_263; | | sql.exportValue(1,"sys.L1","L1","wrd",64,0,6,X_14,""); | | end s9_3; | +-------------------------------------------------------------------------------------------------------------------------+ 171 tuples (63.183ms) sql>explain select count(*) from t_order where orderId = 'XXXXXX'; +----------------------------------------------------------------+ | mal | +================================================================+ | function user.s10_3{autoCommit=true}(A0:str):void; | | X_3 := sql.mvc(); | | X_7 := sql.bind(X_3,"sys","t_order","orderid",0); | | X_10 := X_7; | | X_4:bat[:oid,:oid] := sql.tid(X_3,"sys","t_order"); | | X_11 := algebra.subselect(X_10,X_4,A0,A0,true,true,false); | | X_13 := algebra.leftfetchjoin(X_11,X_10); | | X_14 := aggr.count(X_13); | | sql.exportValue(1,"sys.L1","L1","wrd",64,0,6,X_14,""); | | end s10_3; | | # optimizer.mitosis() | | # optimizer.dataflow() | +----------------------------------------------------------------+ 12 tuples (0.838ms) sql>select * from storage() where "table" = 't_order'; +--------+---------+-------------------+-----------+----------+-----------+-----------+------------+------------+---------+--------+ | schema | table | column | type | location | count | typewidth | columnsize | heapsize | indices | sorted | +========+=========+===================+===========+==========+===========+===========+============+============+=========+========+ | sys | t_order | time | timestamp | 11/1146 | 349989136 | 8 | 2799913088 | 0 | 0 | true | ... | sys | t_order | orderid | varchar | 10/1043 | 349989136 | 6 | 2799913088 | 8240889856 | 0 | false | ... | sys | t_order | idx_orderid | oid | 04/456 | 349989136 | 8 | 2799913088 | 0 | 0 | true | +--------+---------+-------------------+-----------+----------+-----------+-----------+------------+------------+---------+--------+ (some fields edited out...) So the fast one has a much more complicated MAL plan. (Other than this, and a date parsing prob which I've reported, I'm really excited about this software!) -Will Muldrew [View Less]

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Re: copy into failed to import table
by Colin Foss 30 Nov '13

30 Nov '13

I am using the latest version. MonetDB 5 server v11.15.17 "Feb2013-SP5". The server and client are running under my account. The files and folders were also created with my account. Here is a simpler version which also encounters the "failed to import table" message. CREATE TABLE staging_simple_results( lookup varchar(20) NULL, extra_symbol varchar(20) NULL, measure1 tinyint NULL, base_temp float NULL ) ; Here are the contents of the same input, in a file called D:\junk\… [View More]

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"temp" table renamed to "temporary"
by Lee Hachadoorian 28 Nov '13

28 Nov '13

I created a nontemporary table, but named it "temp" (because, after messing around with it, I was going to drop it). The table name on create was changed to "temporary". But the name "temp" still works in some contexts (apparently all SQL) but not others (\d). See session history below. Is this by design? --Lee sql>CREATE TABLE geo_boundaries.temp (id int PRIMARY KEY, name text); operation successful (55.041ms) sql>SELECT * FROM geo_boundaries.temp; +----+------+ | id | name | +====… [View More]

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Table very slow
by Edgar Mejia 27 Nov '13

27 Nov '13

HI, i have one table as 15 millions of rows of all 2013. I all days delete the las 2 months and return to reload them again. Today is table is very slow, one select count takes more that 2 minutes, when it would normally to a few seconds. I migrate this information to a new table and this table if works fine and is very fast. What i need to do for to fix this and how i to fix this table slow? Thansk Edgar M

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copy into failed to import table
by Colin Foss 27 Nov '13

27 Nov '13

I created a table with 43 columns. The table contains char, varchar, and tinyint datatypes. I am running on Windows Server 2008 R2 64bit. The file contains two rows and is comma separated. The file is BCP output from MSSQL. When I tried to bulk load into the table from a file with a COPY INTO command I got an unhelpful message. "failed to import table" How can I find out why the import failed?

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Sum of nulls is 0
by Pedro Salgueiro 26 Nov '13

26 Nov '13

Hi, A few weeks ago we encountered an issue with monetdb when summing nulls, grouped by some column. We managed to create a simple test case which reproduces this scenario: create table test (number int, name varchar(50)); > > insert into test values(1,'jonh'); > insert into test values(2,'mike'); > insert into test values(3,'mary'); > insert into test values(null,'austin'); > insert into test values(null,'jonh'); > insert into test values(null,'mary'); > > … [View More]

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