- developers-list - monetdb.org

[Monetdb-developers] Fw: Re: Fw: Re: Fw: Re: related to jdbc
by anshul gangwar 15 Mar '10

15 Mar '10

hello , actually we are working on java based tool whose main focus is to visualize the plans used by the optimizer for final execution of query but in monetdb optimization is runtime so we have to somehow access that plan through jdbc and what are the maincomponents of the plan i.e can be represented as node in tree We are not able to use that , actually that is giving error MAPI = monetdb@localhost:50000 ACTION= mapi_start_talking ERROR = !xchange_challenge: frontend mal not found Dear Anshul, Op 15-03-10 05:42, anshul gangwar schreef: > We want to debug the monetdb server , in other words we want final > execution plan and query execution times etc. Then most likely you will love the stethoscope tool! It gives an awesome view in the MonetDB kernel *and* it provides you realtime information about the queries that have been executed. That is not all, you can just start and stop it without(!) restarting the server, while still making nifty graphs from this program. I think this is totally what you need. There is a lot documentation written for this tool, so you don't have to be a rocket scientist to use it :) <http://monetdb.cwi.nl/MonetDB/Documentation/Stethoscope.html> The last line on the page will give you an example commandline. If you did not yet change your default monetdb password you can use this one: stethoscope -umonetdb -Pmonetdb +tis algebra.* bat.* group.* sql.* aggr.* Please report back how useful this was for your debuging and use of MonetDB. We appreciate your interest. Yours Sincerely, Stefan de Konink -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEAREKAAYFAkudwdMACgkQYH1+F2Rqwn0+AwCfTg5FruAc6QDgOIT4ZJZ4bOWB hTAAnjkWylxX7JafSLI21qZFE6BMydoO =8rz4 -----END PGP SIGNATURE----- Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/

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[Monetdb-developers] Fw: Re: Fw: Re: related to jdbc
by anshul gangwar 15 Mar '10

15 Mar '10

We want to debug the monetdb server , in other words we want final execution plan and query execution times etc. > We are working on linux so any way through jdbc Just as a sidenote: JDBC vs OBDC is not necessarily a question of the OS; both JDBC and ODBC are available and supported on various OSs, among which Windows and Linux (there is UnixODBC for Linux). > Can we get the debugger output through jdbc Which debugger and/or debugger output are you referring to / talking about? Or in other words, what do you want to debug? Your JDBC client? The JDBC driver? The MonetDB server? The MonetDB kernel? Stefan > You can enable the ODBC debug output by your ODBC configuration. > > For example: > > Trace = Yes > TraceFile = /tmp/debug.log > ForceTrace = Yes > > > Stefan > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.14 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEAREKAAYFAkudHEYACgkQYH1+F2Rqwn2n1ACeJkxR8di3h1McltuRXsDZRxri > V9UAoIchyOqm2pqGDrCWITtWUJngAkhg > =Qz4/ > -----END PGP SIGNATURE----- > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Monetdb-developers mailing list > Monetdb-developers(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/monetdb-developers > > > > The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/ > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Monetdb-developers mailing list > Monetdb-developers(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/monetdb-developers -- | Dr. Stefan Manegold | mailto:Stefan.Manegold@cwi.nl | | CWI, P.O.Box 94079 | http://www.cwi.nl/~manegold/ | | 1090 GB Amsterdam | Tel.: +31 (20) 592-4212 | | The Netherlands | Fax : +31 (20) 592-4199 | The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

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[Monetdb-developers] related to jdbc
by anshul gangwar 14 Mar '10

14 Mar '10

hello, Can we get the debugger output through jdbc Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/

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[Monetdb-developers] Fw: Re: related to jdbc
by anshul gangwar 14 Mar '10

14 Mar '10

We are working on linux so any way through jdbc Can we get the debugger output through jdbc You can enable the ODBC debug output by your ODBC configuration. For example: Trace = Yes TraceFile = /tmp/debug.log ForceTrace = Yes Stefan -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEAREKAAYFAkudHEYACgkQYH1+F2Rqwn2n1ACeJkxR8di3h1McltuRXsDZRxri V9UAoIchyOqm2pqGDrCWITtWUJngAkhg =Qz4/ -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Monetdb-developers mailing list Monetdb-developers(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/monetdb-developers The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

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Re: [Monetdb-developers] [Monetdb-checkins] MonetDB5/conf monetdb5.conf.in, , 1.86, 1.87
by Martin Kersten 14 Mar '10

14 Mar '10

Fabian Groffen wrote: > On 14-03-2010 08:23:57 +0000, Martin Kersten wrote: >> Update of /cvsroot/monetdb/MonetDB5/conf >> In directory sfp-cvsdas-1.v30.ch3.sourceforge.com:/tmp/cvs-serv1052 >> >> Modified Files: >> monetdb5.conf.in >> Log Message: >> The garbage collector optimizer should be the last in the pipelines. > > Was it really the intention to revert my commit making a separate no > minimal_pipe? If so, then also remove the changelog entry for it, I'd > say. > Also, why is there no garbage collector in the minimal pipe? it should > >> Index: monetdb5.conf.in >> =================================================================== >> RCS file: /cvsroot/monetdb/MonetDB5/conf/monetdb5.conf.in,v >> retrieving revision 1.86 >> retrieving revision 1.87 >> diff -u -d -r1.86 -r1.87 >> --- monetdb5.conf.in 9 Mar 2010 12:02:32 -0000 1.86 >> +++ monetdb5.conf.in 14 Mar 2010 08:23:53 -0000 1.87 >> @@ -255,47 +255,50 @@ >> # optimizers to run, or one or more variables containing the optimizer >> # pipeline to run. The latter is provided for readability purposes >> # only. >> +# >> +# The minimal pipeline necessary by the server to operate correctly: >> +# sql_optimizer=inline,remap,deadcode,multiplex >> >> # Set and define the default pipeline >> sql_optimizer=default_pipe >> >> -# The minimal pipeline necessary by the server to operate correctly >> -minimal_pipe=inline,remap,deadcode,multiplex >> - >> # The default pipe line contains as of Feb2010 mitosis-mergetable-reorder, aimed at large tables and improved access locality >> -default_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,commonTerms,joinPath,reorder,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> +default_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,commonTerms,joinPath,reorder,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> >> # the default pipeline used in the November 2009 release >> -nov2009_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> +nov2009_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> >> # experimental pipelines stressing various components >> >> # Replication >> -replication_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,garbageCollector,dataflow,history,replication,multiplex >> +replication_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,replication,multiplex,garbageCollector >> >> # Accumulator >> -accumulator_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,accumulators,garbageCollector,dataflow,history,multiplex >> +accumulator_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,accumulators,dataflow,history,multiplex,garbageCollector >> >> # The Recycle pipeline for Skyserver >> -recycler_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,deadcode,constants,commonTerms,joinPath,deadcode,recycle,reduce,garbageCollector,dataflow,history,multiplex >> +recycler_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,deadcode,constants,commonTerms,joinPath,deadcode,recycle,reduce,dataflow,history,multiplex,garbageCollector >> >> # The Cracking pipeline(s) >> -cracker_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,selcrack,deadcode,constants,commonTerms,joinPath,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> -sidcrack_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,sidcrack,deadcode,constants,commonTerms,joinPath,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> +cracker_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,selcrack,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> +sidcrack_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,sidcrack,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> >> # The datacell pipeline >> -datacell_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,deadcode,constants,commonTerms,joinPath,datacell,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> +datacell_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,deadcode,constants,commonTerms,joinPath,datacell,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> >> # The Octopus pipeline for distributed processing (Merovingian enabled >> # platforms only) >> -octopus_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,constants,commonTerms,joinPath,octopus,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> +octopus_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,constants,commonTerms,joinPath,octopus,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> >> # >> #The default + datacyclotron >> -datacyclotron_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,datacyclotron,mergetable,deadcode,constants,commonTerms,joinPath,reorder,deadcode,reduce,garbageCollector,dataflow,history,replication,multiplex >> +datacyclotron_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,datacyclotron,mergetable,deadcode,constants,commonTerms,joinPath,reorder,deadcode,reduce,dataflow,history,replication,multiplex,garbageCollector >> # >> # the default + derivePath >> -derive_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,derivePath,joinPath,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> +derive_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,derivePath,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> # >> #the default + dictionary >> -dictionary_pipe=inline,remap,dictionary,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,garbageCollector,dataflow,history,multiplex >> +dictionary_pipe=inline,remap,dictionary,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector >> +# >> +#the default + compression >> +compression_pipe=inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,compression,dataflow,history,multiplex,garbageCollector >> >> >> ------------------------------------------------------------------------------ >> Download Intel® Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> http://p.sf.net/sfu/intel-sw-dev >> _______________________________________________ >> Monetdb-checkins mailing list >> Monetdb-checkins(a)lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/monetdb-checkins > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Monetdb-checkins mailing list > Monetdb-checkins(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/monetdb-checkins

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Re: [Monetdb-developers] [Monetdb-checkins] MonetDB/src/gdk gdk.mx, , 1.310, 1.311 gdk_atoms.mx, , 1.176, 1.177 gdk_bbp.mx, , 1.275, 1.276
by Niels Nes 13 Mar '10

13 Mar '10

On Sat, Mar 13, 2010 at 11:05:37PM +0100, Sjoerd Mullender wrote: > How backward and forward compatible is this? You should probably also > change the GDKLIBRARY value and take care of reading older versions. should be backward compatible, ie if its not there, we have the old situation (at least that was the intention) > > On 2010-03-13 22:48, Niels Nes wrote: > > Update of /cvsroot/monetdb/MonetDB/src/gdk > > In directory sfp-cvsdas-1.v30.ch3.sourceforge.com:/tmp/cvs-serv19213/src/gdk > > > > Modified Files: > > gdk.mx gdk_atoms.mx gdk_bbp.mx > > Log Message: > > LLONG_MAX should be defined before compiling BUNlast (needs this because of > > BUN_NONE) > > > > (keep extra string with options in the BBP.dir, for dynamic storage options) > > > > > > Index: gdk_bbp.mx > > =================================================================== > > RCS file: /cvsroot/monetdb/MonetDB/src/gdk/gdk_bbp.mx,v > > retrieving revision 1.275 > > retrieving revision 1.276 > > diff -u -d -r1.275 -r1.276 > > --- gdk_bbp.mx 7 Mar 2010 19:00:40 -0000 1.275 > > +++ gdk_bbp.mx 13 Mar 2010 21:48:43 -0000 1.276 > > @@ -701,7 +701,7 @@ > > int lastused; > > int nread; > > BATstore *bs; > > - char *s; > > + char *s, *options = NULL; > > char logical[1024]; > > lng inserted, deleted, first, count, capacity; > > unsigned short map_head, map_tail, map_hheap, map_theap; > > @@ -848,8 +848,10 @@ > > @:vheapinit(H)@ > > @:vheapinit(T)@ > > > > - if (buf[nread] != '\n') > > + if (buf[nread] != '\n' && buf[nread] != ' ') > > GDKfatal("BBPinit: invalid format for BBP.dir\n%s", buf); > > + if (buf[nread] == ' ') > > + options = buf+nread+1; > > > > BBP[bid].cache = bs; > > BBP[bid].status = BBPEXISTING; /* do we need other status bits? */ > > @@ -867,6 +869,9 @@ > > else > > BBP[bid].nme[1] = GDKstrdup(BBPtmpname(tailname, sizeof(tailname), -bid)); > > BBP[bid].path = GDKstrdup(filename); > > + BBP[bid].options = NULL; > > + if (options) > > + BBP[bid].options = GDKstrdup(options); > > BBP[bid].lastused = lastused; > > if (lastused > max_stamp) > > max_stamp = lastused; > > @@ -1052,6 +1057,9 @@ > > @:vheapprint(H)@ > > @:vheapprint(T)@ > > > > + if (BBP[i].options) > > + stream_printf(s, " %s", BBP[i].options); > > + > > return stream_printf(s, "\n"); > > } > > > > > > Index: gdk.mx > > =================================================================== > > RCS file: /cvsroot/monetdb/MonetDB/src/gdk/gdk.mx,v > > retrieving revision 1.310 > > retrieving revision 1.311 > > diff -u -d -r1.310 -r1.311 > > --- gdk.mx 10 Mar 2010 22:17:11 -0000 1.310 > > +++ gdk.mx 13 Mar 2010 21:48:38 -0000 1.311 > > @@ -389,6 +389,17 @@ > > # define WIFEXITED(stat_val) (((stat_val) & 255) == 0) > > #endif > > > > +#include <limits.h> /* for *_MIN and *_MAX */ > > +#include <float.h> /* for FLT_MAX and DBL_MAX */ > > +#ifndef LLONG_MAX > > +#ifdef LONGLONG_MAX > > +#define LLONG_MAX LONGLONG_MAX > > +#define LLONG_MIN LONGLONG_MIN > > +#else > > +#define LLONG_MAX LL_CONSTANT(9223372036854775807) > > +#define LLONG_MIN (-LL_CONSTANT(9223372036854775807) - LL_CONSTANT(1)) > > +#endif > > +#endif > > > > #ifdef __cplusplus > > extern "C" { > > @@ -2037,6 +2048,7 @@ > > bat next[2]; /* next BBP slot in link list */ > > BATstore *cache; /* cached header info */ > > str path; /* dir + basename for storage */ > > + str options; /* A string list of options */ > > int refs; /* in-memory references on which the loaded status of a BAT relies */ > > int lrefs; /* logical references on which the existence of a BAT relies */ > > int lastused; /* BBP LRU stamp */ > > @@ -2054,6 +2066,7 @@ > > #define BBP_logical(i) BBP[ABS(i)].nme[(i)<0] > > #define BBP_next(i) BBP[ABS(i)].next[(i)<0] > > #define BBP_physical(i) BBP[ABS(i)].path > > +#define BBP_options(i) BBP[ABS(i)].options > > #define BBP_desc(i) BBP[ABS(i)].cache > > #define BBP_refs(i) BBP[ABS(i)].refs > > #define BBP_lrefs(i) BBP[ABS(i)].lrefs > > > > Index: gdk_atoms.mx > > =================================================================== > > RCS file: /cvsroot/monetdb/MonetDB/src/gdk/gdk_atoms.mx,v > > retrieving revision 1.176 > > retrieving revision 1.177 > > diff -u -d -r1.176 -r1.177 > > --- gdk_atoms.mx 12 Feb 2010 08:58:35 -0000 1.176 > > +++ gdk_atoms.mx 13 Mar 2010 21:48:42 -0000 1.177 > > @@ -718,17 +718,6 @@ > > The routine atomnil returns a pointer to the nil value representation. > > @{ > > @h > > -#include <limits.h> /* for *_MIN and *_MAX */ > > -#include <float.h> /* for FLT_MAX and DBL_MAX */ > > -#ifndef LLONG_MAX > > -#ifdef LONGLONG_MAX > > -#define LLONG_MAX LONGLONG_MAX > > -#define LLONG_MIN LONGLONG_MIN > > -#else > > -#define LLONG_MAX LL_CONSTANT(9223372036854775807) > > -#define LLONG_MIN (-LL_CONSTANT(9223372036854775807) - LL_CONSTANT(1)) > > -#endif > > -#endif > > #define GDK_bit_max ((bit) 1) > > #define GDK_bit_min ((bit) 0) > > #define GDK_chr_max ((chr) SCHAR_MAX) > > > > > > ------------------------------------------------------------------------------ > > Download Intel® Parallel Studio Eval > > Try the new software tools for yourself. Speed compiling, find bugs > > proactively, and fine-tune applications for parallel performance. > > See why Intel Parallel Studio got high marks during beta. > > http://p.sf.net/sfu/intel-sw-dev > > _______________________________________________ > > Monetdb-checkins mailing list > > Monetdb-checkins(a)lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/monetdb-checkins > > > -- > Sjoerd Mullender > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Monetdb-checkins mailing list > Monetdb-checkins(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/monetdb-checkins -- Niels Nes, Centrum Wiskunde & Informatica (CWI) Science Park 123, 1098 XG Amsterdam, The Netherlands room L3.14, phone ++31 20 592-4098 sip:4098@sip.cwi.nl url: http://www.cwi.nl/~niels e-mail: Niels.Nes(a)cwi.nl

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[Monetdb-developers] how to find cost
by Puneet Birwa 11 Mar '10

11 Mar '10

hello, thanks for help, but also can u tell me any way to find the cost of final execution plan, m unable to find any option to see what is the actual cost of final execution plan. The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

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[Monetdb-developers] final execution plan
by Puneet Birwa 11 Mar '10

11 Mar '10

hello, can anyone tell me how in monetdb/xquery we can see what is the final plan with the help of which query is executed i.e how can i find the plan generated at run time for query execution (which tells that which join operation is performed at particular node). The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

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[Monetdb-developers] A SERIOUS CONCURRENCY CONTROL BUG
by oursql 09 Mar '10

09 Mar '10

There is a bug in monetdb, you can run the following script in two clients(mclient.exe), and before test, please disable autocommit option. user A: USER B: CREATE TABLE TEST(C1 INT PRIMARY KEY, C2 INT); INSERT INTO TEST VALUES(1,1); COMMIT; SELECT C2 FROM TEST WHERE C1=1; SELECT C2 FROM TEST WHERE C1=1; UPDATE TEST SET C2=10 WHERE C1=1; UPDATE TEST SET C2=30 WHERE C1=1; COMMIT; COMMIT;--CONFLICT, NEED TO ROLLBACK; ROLLBACK; UPDATE TEST SET C2=30 WHERE C1=1; SELECT C2 FROM TEST WHERE C1=1; --THE RESULT IS 10, NOT 30. TOO BAD! 2010-03-09 oursql

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[Monetdb-developers] monetdb cost model
by anshul gangwar 08 Mar '10

08 Mar '10

hello , Is the cost model used at compile time or at runtime for estimation of cardinalities Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/

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