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Overview
Comment: | When reusing a materialized view, make sure the estimated number of output rows is correctly initialized to avoid confusing the query planner. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
87aceb417a813a2925b636cffa660fe2 |
User & Date: | drh 2017-06-11 19:51:36.949 |
Context
2017-06-11
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20:17 | Fix an off-by-one error that messes up the display of loop codes in the ".wheretrace" debugging output for queries with more than 62 candidate loops when SQLITE_ENABLE_WHERETRACE is on. (check-in: 0bbdaf2801 user: drh tags: trunk) | |
19:51 | When reusing a materialized view, make sure the estimated number of output rows is correctly initialized to avoid confusing the query planner. (check-in: 87aceb417a user: drh tags: trunk) | |
19:40 | Fix the sessiondiff test module so that it does not run if the session extension is not enabled. (check-in: 8f92b7a622 user: drh tags: trunk) | |
Changes
Changes to src/select.c.
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5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 | }else{ VdbeNoopComment((v, "materialize \"%s\"", pItem->pTab->zName)); } pPrior = isSelfJoinView(pTabList, pItem); if( pPrior ){ sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pPrior->iCursor); explainSetInteger(pItem->iSelectId, pPrior->iSelectId); }else{ sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor); explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId); sqlite3Select(pParse, pSub, &dest); } pItem->pTab->nRowLogEst = pSub->nSelectRow; if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr); | > > | 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 | }else{ VdbeNoopComment((v, "materialize \"%s\"", pItem->pTab->zName)); } pPrior = isSelfJoinView(pTabList, pItem); if( pPrior ){ sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pPrior->iCursor); explainSetInteger(pItem->iSelectId, pPrior->iSelectId); assert( pPrior->pSelect!=0 ); pSub->nSelectRow = pPrior->pSelect->nSelectRow; }else{ sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor); explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId); sqlite3Select(pParse, pSub, &dest); } pItem->pTab->nRowLogEst = pSub->nSelectRow; if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr); |
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