mirror of https://github.com/sqlite/sqlite
Handle the case where the estimated cost of a virtual table scan is larger than SQLITE_BIG_DBL. Ticket #2253. (CVS 3670)
FossilOrigin-Name: 52885ed8b76a06588acf202a38b4feabfca1cfd1
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danielk1977
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C Disable\sthe\s"SELECT\smax(rowid)\s..."\soptimization\sfor\svirtual\stables.\sTicket\s#2250.\s(CVS\s3669)
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D 2007-03-02T07:27:00
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C Handle\sthe\scase\swhere\sthe\sestimated\scost\sof\sa\svirtual\stable\sscan\sis\slarger\sthan\sSQLITE_BIG_DBL.\sTicket\s#2253.\s(CVS\s3670)
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D 2007-03-02T08:12:22
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F Makefile.in 1fe3d0b46e40fd684e1e61f8e8056cefed16de9f
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F Makefile.linux-gcc 2d8574d1ba75f129aba2019f0b959db380a90935
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F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
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@ -129,7 +129,7 @@ F src/vdbeaux.c 666f0753f7d70b6a092c7f2074ae8cf1f9755cfc
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F src/vdbefifo.c 9efb94c8c3f4c979ebd0028219483f88e57584f5
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F src/vdbemem.c ff2424bee9eaf7c61d1f28bc0e711bebddebd653
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F src/vtab.c 7fbda947e28cbe7adb3ba752a76ca9ef29936750
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F src/where.c d4a10cf428e5bf855e8a7f6c6a95119ca93489f0
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F src/where.c 1242dd545ffa7be8b2f539984d5f458ec731a937
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F tclinstaller.tcl 046e3624671962dc50f0481d7c25b38ef803eb42
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F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
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F test/all.test b62fcd122052efaff1b0979aefa2dd65cfc8ee52
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@ -348,14 +348,14 @@ F test/vacuum.test cf839fc3ff24d601057319bbb5c700ce9c8e0fb0
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F test/vacuum2.test 5aea8c88a65cb29f7d175296e7c819c6158d838c
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F test/varint.test ab7b110089a08b9926ed7390e7e97bdefeb74102
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F test/view.test 852bd4101e6d171c46ad682eb5c5faf662b2eba4
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F test/vtab1.test bbfeb479bc851993403d7f08cf071b34d0e3b4c2
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F test/vtab1.test 92410029a2679c8751635ecaa023cf54bc5ab4eb
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F test/vtab2.test 94bb3bf691ac10e34cf7dad46b1cf94b861d513c
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F test/vtab3.test f38d6d7d19f08bffdadce4d5b8cba078f8118587
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F test/vtab4.test a9d7104d41a787754a734740d7aa61c807a69f87
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F test/vtab5.test 9fb8f335651afe8f870011e2f68e5b00c5ad03cd
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F test/vtab6.test ec0036f29f8a803da9935206f2d9d1b6a8026392
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F test/vtab7.test 5f9ef9fb84733e928d5d0267c821072561b198d5
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F test/vtab8.test 31b61c3caeb18c9166483b53c9fc911dd0bf08ff
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F test/vtab8.test e19fa4a538fcd1bb66c22825fa8f71618fb13583
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F test/vtab9.test 87afba55339b0c255e9697fbfb5bfb6120505d9d
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F test/vtab_err.test 224cc80ad700797c48b9cd2c1e0bd7a8517d8609
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F test/where.test 1d020f50c77f37b2dbab9766ca959e6e3278ecdb
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@ -435,7 +435,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
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F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
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F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
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F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
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P 8d3829cdb35f41bc7a2e6f945e9aa83987513104
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R a8c74ef4df5791aca2f931fcffb9fa89
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P ddb4d0af5770c7030fe6e92119972c9508724b9a
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R 35703e5b3fc1d8c9b1249f60db5a29c1
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U danielk1977
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Z 81b4e3cb66e26f39332d05ca445f394b
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Z cc77ee9ae5f32f8281d9b31d7adeb8f2
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@ -1 +1 @@
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ddb4d0af5770c7030fe6e92119972c9508724b9a
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52885ed8b76a06588acf202a38b4feabfca1cfd1
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11
src/where.c
11
src/where.c
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@ -16,7 +16,7 @@
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** so is applicable. Because this module is responsible for selecting
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** indices, you might also think of this module as the "query optimizer".
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**
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** $Id: where.c,v 1.238 2007/02/23 23:13:34 drh Exp $
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** $Id: where.c,v 1.239 2007/03/02 08:12:22 danielk1977 Exp $
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*/
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#include "sqliteInt.h"
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@ -1357,6 +1357,7 @@ static double bestVirtualIndex(
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rc = sqlite3SafetyOn(pParse->db);
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}
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*(int*)&pIdxInfo->nOrderBy = nOrderBy;
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return pIdxInfo->estimatedCost;
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}
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#endif /* SQLITE_OMIT_VIRTUALTABLE */
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@ -2043,6 +2044,14 @@ WhereInfo *sqlite3WhereBegin(
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}
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pIdx = 0;
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nEq = 0;
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if( (SQLITE_BIG_DBL/2.0)<cost ){
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/* The cost is not allowed to be larger than SQLITE_BIG_DBL (the
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** inital value of lowestCost in this loop. If it is, then
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** the (cost<lowestCost) test below will never be true and
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** pLevel->pBestIdx never set.
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*/
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cost = (SQLITE_BIG_DBL/2.0);
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}
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}else
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#endif
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{
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@ -11,7 +11,7 @@
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# This file implements regression tests for SQLite library. The
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# focus of this file is creating and dropping virtual tables.
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#
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# $Id: vtab1.test,v 1.40 2007/02/21 16:52:12 danielk1977 Exp $
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# $Id: vtab1.test,v 1.41 2007/03/02 08:12:23 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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@ -890,28 +890,6 @@ do_test vtab1.11-5 {
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}
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} {{2 1} {2 2}}
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# See ticket #2244
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#
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do_test vtab1.2244-1 {
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execsql {
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CREATE TABLE t2244(a, b);
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CREATE VIRTUAL TABLE t2244e USING echo(t2244);
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INSERT INTO t2244 VALUES('AA', 'BB');
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INSERT INTO t2244 VALUES('CC', 'DD');
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SELECT rowid, * FROM t2244e;
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}
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} {1 AA BB 2 CC DD}
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do_test vtab1.2244-2 {
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execsql {
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SELECT * FROM t2244e WHERE rowid = 10;
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}
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} {}
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do_test vtab1.2244-3 {
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execsql {
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UPDATE t2244e SET a = 'hello world' WHERE 0;
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SELECT rowid, * FROM t2244e;
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}
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} {1 AA BB 2 CC DD}
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unset -nocomplain echo_module_begin_fail
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finish_test
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# focus of this file inserting into virtual tables from a SELECT
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# statement.
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#
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# $Id: vtab8.test,v 1.1 2007/03/02 07:27:01 danielk1977 Exp $
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# $Id: vtab8.test,v 1.2 2007/03/02 08:12:23 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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@ -57,8 +57,7 @@ do_test vtab1-2250-2 {
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}
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} {1 1}
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# See ticket #2260 (note: this test doesn't trigger the bug yet - it's a
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# work in progress).
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# See ticket #2260.
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#
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do_test vtab1.2260-1 {
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execsql {
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