diff options
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sql/item.h b/sql/item.h index b54064580e9..29114d5a440 100644 --- a/sql/item.h +++ b/sql/item.h @@ -3575,6 +3575,22 @@ public: Item *get_tmp_table_item(THD *thd); table_map used_tables() const; void update_used_tables(); + COND *build_equal_items(THD *thd, COND_EQUAL *inherited, + bool link_item_fields) + { + /* + Item_ref cannot refer to Item_field when build_equal_items() is called, + because all "WHERE/HAVING field" are already replaced to + "WHERE/HAVING field<>0" by this time. See normalize_cond(). + TODO: make sure with Igor and Sanja, perhaps the below expression + can be simplified just to a Item::build_equal_items() call. + */ + return real_type() == FIELD_ITEM ? + Item_ident_or_func_or_sum::build_equal_items(thd, inherited, + link_item_fields) : + Item::build_equal_items(thd, inherited, + link_item_fields); + } bool const_item() const { return (*ref)->const_item(); |