diff options
Diffstat (limited to 'sql/item.cc')
| -rw-r--r-- | sql/item.cc | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sql/item.cc b/sql/item.cc index 16dbd011f22..aee35b611e7 100644 --- a/sql/item.cc +++ b/sql/item.cc @@ -9166,11 +9166,18 @@ table_map Item_ref::used_tables() const void Item_ref::update_used_tables() -{ +{ if (!get_depended_from()) - (*ref)->update_used_tables(); + (*ref)->update_used_tables(); + maybe_null= (*ref)->maybe_null; } +void Item_direct_view_ref::update_used_tables() +{ + Item_ref::update_used_tables(); + if (view->table && view->table->maybe_null) + maybe_null= TRUE; +} table_map Item_direct_view_ref::used_tables() const { |