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Overview
Comment: | Do not use an index fullscan for an UPDATE or DELETE or if disabled by sqlite3_test_control() or sqlite3_config(). |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | nextgen-query-plan-exp |
Files: | files | file ages | folders |
SHA1: |
fabb21854e662b1d8e5631e79f828d53 |
User & Date: | drh 2013-06-03 19:17:40.684 |
Context
2013-06-03
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20:46 | Pull in recent trunk changes. Fix the ORDER BY optimizer so that it is better able to deal with COLLATE clauses. Clean up ambiguities in the descidx1.test script. (check-in: 6bc71dfcf0 user: drh tags: nextgen-query-plan-exp) | |
19:17 | Do not use an index fullscan for an UPDATE or DELETE or if disabled by sqlite3_test_control() or sqlite3_config(). (check-in: fabb21854e user: drh tags: nextgen-query-plan-exp) | |
19:01 | Resolve ambiguities in test cases in collate2.test. (check-in: dcbbcb2e6c user: drh tags: nextgen-query-plan-exp) | |
Changes
Changes to src/where.c.
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4220 4221 4222 4223 4224 4225 4226 | if( x<BMS-1 ){ m &= ~(((Bitmask)1)<<x); } } pNew->wsFlags = (m==0) ? (WHERE_IDX_ONLY|WHERE_INDEXED) : WHERE_INDEXED; /* Full scan via index */ | | > > > > > | 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 | if( x<BMS-1 ){ m &= ~(((Bitmask)1)<<x); } } pNew->wsFlags = (m==0) ? (WHERE_IDX_ONLY|WHERE_INDEXED) : WHERE_INDEXED; /* Full scan via index */ if( (m==0 || b) && pProbe->bUnordered==0 && (pBuilder->pWC->wctrlFlags & WHERE_ONEPASS_DESIRED)==0 && sqlite3GlobalConfig.bUseCis && OptimizationEnabled(pBuilder->pParse->db, SQLITE_CoverIdxScan) ){ pNew->iSortIdx = b ? iSortIdx : 0; pNew->nOut = rSize; pNew->rRun = (m==0) ? (rSize + rLogSize)*(1+b) : (rSize*rLogSize); rc = whereLoopInsert(pBuilder, pNew); if( rc ) break; } } |
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