diff options
Diffstat (limited to 'sql/item_subselect.h')
| -rw-r--r-- | sql/item_subselect.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/sql/item_subselect.h b/sql/item_subselect.h index dfe3287615b..fa5cbe8c424 100644 --- a/sql/item_subselect.h +++ b/sql/item_subselect.h @@ -33,6 +33,7 @@ class subselect_hash_sj_engine; class Item_bool_func2; class Comp_creator; class With_element; +class Field_pair; typedef class st_select_lex SELECT_LEX; @@ -570,6 +571,8 @@ public: */ bool is_registered_semijoin; + List<Field_pair> corresponding_fields; + /* Used to determine how this subselect item is represented in the item tree, in case there is a need to locate it there and replace with something else. @@ -741,6 +744,8 @@ public: return 0; }; + bool pushdown_cond_for_in_subquery(THD *thd, Item *cond); + friend class Item_ref_null_helper; friend class Item_is_not_null_test; friend class Item_in_optimizer; @@ -852,7 +857,6 @@ protected: void set_row(List<Item> &item_list, Item_cache **row); }; - class subselect_single_select_engine: public subselect_engine { bool prepared; /* simple subselect is prepared */ @@ -886,9 +890,10 @@ public: friend class subselect_hash_sj_engine; friend class Item_in_subselect; - friend bool setup_jtbm_semi_joins(JOIN *join, List<TABLE_LIST> *join_list, - Item **join_where); - + friend bool execute_degenerate_jtbm_semi_join(THD *thd, + TABLE_LIST *tbl, + Item_in_subselect *subq_pred, + List<Item> &eq_list); }; |