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When an IN operator drives a query loop, mark it as "CODED" so that it

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will not be used afterwards for a (pointless) membership test.  This is
a better fix for ticket [df46dfb631f75694] than the previous fix that is
now on a branch as it preserves the full optimization of
check-in [e130319317e76119].

FossilOrigin-Name: fa792714ae62fa980f1767acc6d622a6727ceb677870243c88548423795dcb5b
This commit is contained in:
drh
2019-02-20 12:52:47 +00:00
parent 2a98b586c8
commit 042666e4fa
4 changed files with 73 additions and 8 deletions
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src/wherecode.c
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@@ -1344,6 +1344,7 @@ Bitmask sqlite3WhereCodeOneLoopStart(
sqlite3VdbeAddOp3(v, OP_SeekRowid, iCur, addrNxt, iRowidReg);
VdbeCoverage(v);
pLevel->op = OP_Noop;
pTerm->wtFlags |= TERM_CODED;
}else if( (pLoop->wsFlags & WHERE_IPK)!=0
&& (pLoop->wsFlags & WHERE_COLUMN_RANGE)!=0
){