diff options
Diffstat (limited to 'sql/item_cmpfunc.h')
| -rw-r--r-- | sql/item_cmpfunc.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h index da7337565ac..a64a69eb6c8 100644 --- a/sql/item_cmpfunc.h +++ b/sql/item_cmpfunc.h @@ -353,8 +353,7 @@ class Item_in_optimizer: public Item_bool_func protected: Item_cache *cache; Item *expr_cache; - bool save_cache; - /* + /* Stores the value of "NULL IN (SELECT ...)" for uncorrelated subqueries: UNKNOWN - "NULL in (SELECT ...)" has not yet been evaluated FALSE - result is FALSE @@ -364,7 +363,7 @@ protected: public: Item_in_optimizer(THD *thd, Item *a, Item *b): Item_bool_func(thd, a, b), cache(0), expr_cache(0), - save_cache(0), result_for_null_param(UNKNOWN) + result_for_null_param(UNKNOWN) { m_with_subquery= true; } bool fix_fields(THD *, Item **) override; bool fix_left(THD *thd); @@ -375,7 +374,6 @@ public: enum Functype functype() const override { return IN_OPTIMIZER_FUNC; } const char *func_name() const override { return "<in_optimizer>"; } Item_cache **get_cache() { return &cache; } - void keep_top_level_cache(); Item *transform(THD *thd, Item_transformer transformer, uchar *arg) override; Item *expr_cache_insert_transformer(THD *thd, uchar *unused) override; bool is_expensive_processor(void *arg) override; |