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Avoid redundant constraint checking due to transitive constraints.

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FossilOrigin-Name: 329478cbed06f93652de50abdb31a6b41af02b9e
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drh
2013-05-01 17:22:38 +00:00
parent 9a1eccb621
commit 5c10f3b38e
3 changed files with 8 additions and 7 deletions
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src/where.c
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@@ -4883,6 +4883,7 @@ static Bitmask codeOneLoopStart(
assert( (pTerm->prereqRight & newNotReady)!=0 );
pAlt = findTerm(pWC, iCur, pTerm->u.leftColumn, notReady, WO_EQ|WO_IN, 0);
if( pAlt==0 ) continue;
if( pAlt->wtFlags & (TERM_CODED) ) continue;
VdbeNoopComment((v, "begin transitive constraint"));
sEq = *pAlt->pExpr;
sEq.pLeft = pE->pLeft;