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authordrh <drh@noemail.net>2014-12-04 16:27:17 +0000
committerdrh <drh@noemail.net>2014-12-04 16:27:17 +0000
commit72673a24e2d38c1699d911cfca0203f5e545f78c (patch)
tree90f4ce666016c55d5f17f3b409f4c1240611e298 /src/resolve.c
parentd8922052b27a3d2d62ccf3cf0ef1ea9b7272124d (diff)
downloadsqlite-72673a24e2d38c1699d911cfca0203f5e545f78c.tar.gz
sqlite-72673a24e2d38c1699d911cfca0203f5e545f78c.zip
If a table is the right operand of a LEFT JOIN, then any column of that
table can be NULL even if that column as a NOT NULL constraint. Fix for ticket [6f2222d550f5b0ee7ed]. FossilOrigin-Name: 6f6fcbe4736b9468a495c684d5eebc8bfe5c566a
Diffstat (limited to 'src/resolve.c')
-rw-r--r--src/resolve.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/resolve.c b/src/resolve.c
index 8fb580b3a..d4bd548c9 100644
--- a/src/resolve.c
+++ b/src/resolve.c
@@ -320,6 +320,10 @@ static int lookupName(
if( pMatch ){
pExpr->iTable = pMatch->iCursor;
pExpr->pTab = pMatch->pTab;
+ assert( (pMatch->jointype & JT_RIGHT)==0 ); /* RIGHT JOIN not (yet) supported */
+ if( (pMatch->jointype & JT_LEFT)!=0 ){
+ ExprSetProperty(pExpr, EP_CanBeNull);
+ }
pSchema = pExpr->pTab->pSchema;
}
} /* if( pSrcList ) */