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When flattening a view that is the right operand of a LEFT JOIN, using

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the optimization of check-in [41c27bc0ff1d3135], always insert the
TK_IF_NULL_ROW expression nodes, even for TK_COLUMN expressions, as
the TK_COLUMN might be a column from an outer query and hence still need
to be NULLed out. This fixes the problem described by
[forum:/forumpost/26387ea7ef|forum post 26387ea7ef].

FossilOrigin-Name: 198b3e33dcfd74c7ba6abcf789ee81dfed464a50ebf15c8edeff349d36789fca
This commit is contained in:
drh
2023-03-01 20:23:46 +00:00
parent fe37348255
commit bf90114867
4 changed files with 40 additions and 9 deletions
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2
src/select.c
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@@ -3861,7 +3861,7 @@ static Expr *substExpr(
sqlite3VectorErrorMsg(pSubst->pParse, pCopy);
}else{
sqlite3 *db = pSubst->pParse->db;
if( pSubst->isOuterJoin && pCopy->op!=TK_COLUMN ){
if( pSubst->isOuterJoin ){
memset(&ifNullRow, 0, sizeof(ifNullRow));
ifNullRow.op = TK_IF_NULL_ROW;
ifNullRow.pLeft = pCopy;