diff options
Diffstat (limited to 'sql/sql_select.h')
| -rw-r--r-- | sql/sql_select.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sql/sql_select.h b/sql/sql_select.h index bc2c1b0f2cf..a0a722b2fc8 100644 --- a/sql/sql_select.h +++ b/sql/sql_select.h @@ -1551,7 +1551,18 @@ public: bool union_part; ///< this subselect is part of union bool optimized; ///< flag to avoid double optimization in EXPLAIN + /* + Subqueries that will need to be converted to semi-join nests (the list + is emptied when conversion is done + */ Array<Item_in_subselect> sj_subselects; + + /* + Subqueries that will need to be converted to JOIN_TABs + (Note this is different from the above in the respect that it's part + of WHERE clause or something like that?) + */ + //Array<Item_in_subselect> jtbm_subselects; /* Temporary tables used to weed-out semi-join duplicates */ List<TABLE> sj_tmp_tables; @@ -1575,6 +1586,7 @@ public: JOIN(THD *thd_arg, List<Item> &fields_arg, ulonglong select_options_arg, select_result *result_arg) :fields_list(fields_arg), sj_subselects(thd_arg->mem_root, 4) + //jtbm_subselects(thd_arg->mem_root, 4) { init(thd_arg, fields_arg, select_options_arg, result_arg); } |