diff options
Diffstat (limited to 'sql/item_row.cc')
| -rw-r--r-- | sql/item_row.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sql/item_row.cc b/sql/item_row.cc index 2c4a628075e..cfd2f34095c 100644 --- a/sql/item_row.cc +++ b/sql/item_row.cc @@ -145,11 +145,13 @@ void Item_row::update_used_tables() { used_tables_cache= 0; const_item_cache= 1; + maybe_null= 0; for (uint i= 0; i < arg_count; i++) { items[i]->update_used_tables(); used_tables_cache|= items[i]->used_tables(); const_item_cache&= items[i]->const_item(); + maybe_null|= items[i]->maybe_null; } } |