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Allow the left-hand side of IN operators on virtual tables to have the

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aConstraintUsage[].omit flag clear.

FossilOrigin-Name: 1622623cbbfc4325c53d731aba78ca9c382ec612
This commit is contained in:
drh
2016-03-02 03:28:07 +00:00
parent 47784529cc
commit dbc49161c0
9 changed files with 82 additions and 33 deletions
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7
src/where.c
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@@ -2898,13 +2898,6 @@ static int whereLoopAddVirtual(
testcase( iTerm==16 );
if( iTerm<16 && pUsage[i].omit ) pNew->u.vtab.omitMask |= 1<<iTerm;
if( (pTerm->eOperator & WO_IN)!=0 ){
if( pUsage[i].omit==0 ){
/* Do not attempt to use an IN constraint if the virtual table
** says that the equivalent EQ constraint cannot be safely omitted.
** If we do attempt to use such a constraint, some rows might be
** repeated in the output. */
break;
}
/* A virtual table that is constrained by an IN clause may not
** consume the ORDER BY clause because (1) the order of IN terms
** is not necessarily related to the order of output terms and