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| author | Sergey Glukhov <sergey.glukhov@oracle.com> | 2011-08-02 11:33:45 +0400 |
|---|---|---|
| committer | Sergey Glukhov <sergey.glukhov@oracle.com> | 2011-08-02 11:33:45 +0400 |
| commit | de3693a1cd292af3efd8841414da866ee2c2e1de (patch) | |
| tree | 12ae3424978cad870dff4198962862e5c0573ab0 /sql/sql_base.cc | |
| parent | 7841c3f574a7a12b8ed44001b92da7f28764de63 (diff) | |
| download | mariadb-git-de3693a1cd292af3efd8841414da866ee2c2e1de.tar.gz | |
Bug#11766594 59736: SELECT DISTINCT.. INCORRECT RESULT WITH DETERMINISTIC FUNCTION IN WHERE C
There is an optimization of DISTINCT in JOIN::optimize()
which depends on THD::used_tables value. Each SELECT statement
inside SP resets used_tables value(see mysql_select()) and it
leads to wrong result. The fix is to replace THD::used_tables
with LEX::used_tables.
Diffstat (limited to 'sql/sql_base.cc')
| -rw-r--r-- | sql/sql_base.cc | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sql/sql_base.cc b/sql/sql_base.cc index 87d28402e01..ab1ba156905 100644 --- a/sql/sql_base.cc +++ b/sql/sql_base.cc @@ -7576,7 +7576,7 @@ bool setup_fields(THD *thd, Item **ref_pointer_array, if (item->with_sum_func && item->type() != Item::SUM_FUNC_ITEM && sum_func_list) item->split_sum_func(thd, ref_pointer_array, *sum_func_list); - thd->used_tables|= item->used_tables(); + thd->lex->used_tables|= item->used_tables(); thd->lex->current_select->cur_pos_in_select_list++; } thd->lex->current_select->is_item_list_lookup= save_is_item_list_lookup; @@ -7923,7 +7923,7 @@ insert_fields(THD *thd, Name_resolution_context *context, const char *db_name, views and natural joins this update is performed inside the loop below. */ if (table) - thd->used_tables|= table->map; + thd->lex->used_tables|= table->map; /* Initialize a generic field iterator for the current table reference. @@ -8008,7 +8008,7 @@ insert_fields(THD *thd, Name_resolution_context *context, const char *db_name, field_table= nj_col->table_ref->table; if (field_table) { - thd->used_tables|= field_table->map; + thd->lex->used_tables|= field_table->map; field_table->covering_keys.intersect(field->part_of_key); field_table->merge_keys.merge(field->part_of_key); field_table->used_fields++; @@ -8016,7 +8016,7 @@ insert_fields(THD *thd, Name_resolution_context *context, const char *db_name, } } else - thd->used_tables|= item->used_tables(); + thd->lex->used_tables|= item->used_tables(); thd->lex->current_select->cur_pos_in_select_list++; } /* |