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Give the EXISTS-to-IN optimization the ability to handle some cases that

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involve vector comparisons, instead of throwing a mysterious error in those
cases.

FossilOrigin-Name: 87e78a19bb3ae1caf57aeeae53a5ab4efdccb57265f25d5c19b62eae53747aff
This commit is contained in:
drh
2021-01-16 18:55:10 +00:00
parent 2a3be742ca
commit 4be8bdccd4
4 changed files with 37 additions and 12 deletions
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14
src/whereexpr.c
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@@ -1215,16 +1215,24 @@ static void exprAnalyzeExists(
if( pInLhs==pEq->pLeft ){
pRet = pEq->pRight;
}else{
CollSeq *p = sqlite3ExprCompareCollSeq(pParse, pEq);
pInLhs = sqlite3ExprAddCollateString(pParse, pInLhs, p?p->zName:"BINARY");
pRet = pEq->pLeft;
if( pRet->op!=TK_VECTOR ){
CollSeq *p = sqlite3ExprCompareCollSeq(pParse, pEq);
pInLhs = sqlite3ExprAddCollateString(pParse, pInLhs, p?p->zName:"BINARY");
}
}
assert( pDup->pLeft==0 );
pDup->op = TK_IN;
pDup->pLeft = pInLhs;
pDup->flags &= ~EP_VarSelect;
pSel->pEList = sqlite3ExprListAppend(pParse, 0, pRet);
if( pRet->op==TK_VECTOR ){
pSel->pEList = pRet->x.pList;
pRet->x.pList = 0;
sqlite3ExprDelete(db, pRet);
}else{
pSel->pEList = sqlite3ExprListAppend(pParse, 0, pRet);
}
pEq->pLeft = 0;
pEq->pRight = 0;
if( ppAnd ){