database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-11 01:42:22 +03:00
Code Activity

Add support for sqlite3_stmt_scanstatus_v2() profiling of GROUP BY clauses that use a temp b-tree.

Browse Source 
FossilOrigin-Name: 796eadcc50e7ea9ec348b1f7e2d6a5a3de78c675a07f665078309e6d81479e7d
This commit is contained in:
dan
2023-06-30 17:14:36 +00:00
parent 1bfe92a691
commit 07d76f7b95
6 changed files with 71 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/select.c
View File

@@ -8009,9 +8009,13 @@ int sqlite3Select(
int nCol;
int nGroupBy;
explainTempTable(pParse,
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
int addrExp; /* Address of OP_Explain instruction */
#endif
ExplainQueryPlan2(addrExp, (pParse, 0, "USE TEMP B-TREE FOR %s",
(sDistinct.isTnct && (p->selFlags&SF_Distinct)==0) ?
"DISTINCT" : "GROUP BY");
"DISTINCT" : "GROUP BY"
));
groupBySort = 1;
nGroupBy = pGroupBy->nExpr;
@@ -8036,18 +8040,23 @@ int sqlite3Select(
}
pAggInfo->directMode = 0;
regRecord = sqlite3GetTempReg(pParse);
sqlite3VdbeScanStatusCounters(v, addrExp, 0, sqlite3VdbeCurrentAddr(v));
sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regRecord);
sqlite3VdbeAddOp2(v, OP_SorterInsert, pAggInfo->sortingIdx, regRecord);
sqlite3VdbeScanStatusRange(v, addrExp, sqlite3VdbeCurrentAddr(v)-2, -1);
sqlite3ReleaseTempReg(pParse, regRecord);
sqlite3ReleaseTempRange(pParse, regBase, nCol);
TREETRACE(0x2,pParse,p,("WhereEnd\n"));
sqlite3WhereEnd(pWInfo);
pAggInfo->sortingIdxPTab = sortPTab = pParse->nTab++;
sortOut = sqlite3GetTempReg(pParse);
sqlite3VdbeScanStatusCounters(v, addrExp, sqlite3VdbeCurrentAddr(v), 0);
sqlite3VdbeAddOp3(v, OP_OpenPseudo, sortPTab, sortOut, nCol);
sqlite3VdbeAddOp2(v, OP_SorterSort, pAggInfo->sortingIdx, addrEnd);
VdbeComment((v, "GROUP BY sort")); VdbeCoverage(v);
pAggInfo->useSortingIdx = 1;
sqlite3VdbeScanStatusRange(v, addrExp, -1, sortPTab);
sqlite3VdbeScanStatusRange(v, addrExp, -1, pAggInfo->sortingIdx);
}
/* If there are entries in pAgggInfo->aFunc[] that contain subexpressions