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Sometimes it makes sense to do a full table scan rather than try to use

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an index when most of the rows will be selected.  This branch is trying to
tune the query planner to make that happen more often.

FossilOrigin-Name: 0f42099ad65855c94af8472f3a6fddac7fc2a82e8fdfcc06a298eb6683a28688
This commit is contained in:
drh
2020-10-22 15:47:48 +00:00
parent 672f07c642
commit 403869680b
6 changed files with 32 additions and 12 deletions
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src/analyze.c
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@@ -1772,6 +1772,7 @@ static int loadStatTbl(
}
pSpace = (tRowcnt*)&pIdx->aSample[nSample];
pIdx->aAvgEq = pSpace; pSpace += nIdxCol;
pIdx->pTable->tabFlags |= TF_HasStat4;
for(i=0; i<nSample; i++){
pIdx->aSample[i].anEq = pSpace; pSpace += nIdxCol;
pIdx->aSample[i].anLt = pSpace; pSpace += nIdxCol;