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Bloom filter pull-down optimization is incompatible with Skip-Scan.

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Make sure the query planner does not try to to both.
[forum:/info/50a1bbe08ce4c29c|Forum post 50a1bbe08ce4c29c].

FossilOrigin-Name: ad3ffa1a75a5a032ebb64d8e014ee0a85c5e44b732e4b11bd67f31a59e729b94
This commit is contained in:
drh
2022-03-02 21:04:10 +00:00
parent fc854505b4
commit 5694569591
4 changed files with 29 additions and 8 deletions
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2
src/wherecode.c
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@@ -792,6 +792,7 @@ static int codeAllEqualityTerms(
VdbeCoverageIf(v, bRev!=0);
VdbeComment((v, "begin skip-scan on %s", pIdx->zName));
j = sqlite3VdbeAddOp0(v, OP_Goto);
assert( pLevel->addrSkip==0 );
pLevel->addrSkip = sqlite3VdbeAddOp4Int(v, (bRev?OP_SeekLT:OP_SeekGT),
iIdxCur, 0, regBase, nSkip);
VdbeCoverageIf(v, bRev==0);
@@ -1397,6 +1398,7 @@ static SQLITE_NOINLINE void filterPullDown(
WhereLevel *pLevel = &pWInfo->a[iLevel];
WhereLoop *pLoop = pLevel->pWLoop;
if( pLevel->regFilter==0 ) continue;
if( pLevel->pWLoop->nSkip ) continue;
/* ,--- Because sqlite3ConstructBloomFilter() has will not have set
** vvvvv--' pLevel->regFilter if this were true. */
if( NEVER(pLoop->prereq & notReady) ) continue;