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Follow-up to the previous: The same optimization suppression needs to

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happen if the left-hand side is coming from a LEFT JOIN.

FossilOrigin-Name: cf5b37b3a39013d8ca9de92da2289346caf52b56daff59e19b140cc586a3421f
This commit is contained in:
drh
2025-05-30 22:58:09 +00:00
parent dd16539e71
commit d930d7ef14
4 changed files with 27 additions and 14 deletions
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src/select.c
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@@ -631,6 +631,9 @@ static int sqlite3ProcessJoin(Parse *pParse, Select *p){
pFuncArgs = sqlite3ExprListAppend(pParse, pFuncArgs, pE1);
pE1 = sqlite3ExprFunction(pParse, pFuncArgs, &tkCoalesce, 0);
}
}else if( (pSrc->a[i+1].fg.jointype & JT_LEFT)!=0 && pParse->nErr==0 ){
assert( pE1!=0 );
ExprSetProperty(pE1, EP_CanBeNull);
}
pE2 = sqlite3CreateColumnExpr(db, pSrc, i+1, iRightCol);
sqlite3SrcItemColumnUsed(pRight, iRightCol);