diff options
Diffstat (limited to 'sql/sql_base.cc')
| -rw-r--r-- | sql/sql_base.cc | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/sql/sql_base.cc b/sql/sql_base.cc index e3fbfb2d0e3..f705b592e5a 100644 --- a/sql/sql_base.cc +++ b/sql/sql_base.cc @@ -1760,6 +1760,7 @@ TABLE *open_temporary_table(THD *thd, const char *path, const char *db, } tmp_table->reginfo.lock_type=TL_WRITE; // Simulate locked + tmp_table->in_use= thd; tmp_table->tmp_table = (tmp_table->file->has_transactions() ? TRANSACTIONAL_TMP_TABLE : TMP_TABLE); tmp_table->table_cache_key=(char*) (tmp_table+1); @@ -2184,8 +2185,19 @@ int setup_wild(THD *thd, TABLE_LIST *tables, List<Item> &fields, !((Item_field*) item)->field) { uint elem= fields.elements; - if (insert_fields(thd,tables,((Item_field*) item)->db_name, - ((Item_field*) item)->table_name, &it)) + Item_subselect *subsel= thd->lex->current_select->master_unit()->item; + if (subsel && + subsel->substype() == Item_subselect::EXISTS_SUBS) + { + /* + It is EXISTS(SELECT * ...) and we can replace * by any constant. + + Item_int do not need fix_fields() because it is basic constant. + */ + it.replace(new Item_int("Not_used", (longlong) 1, 21)); + } + else if (insert_fields(thd,tables,((Item_field*) item)->db_name, + ((Item_field*) item)->table_name, &it)) { if (stmt) thd->restore_backup_item_arena(stmt, &backup); |