diff options
Diffstat (limited to 'sql/sql_delete.cc')
| -rw-r--r-- | sql/sql_delete.cc | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc index df313d8040c..3ab053d1741 100644 --- a/sql/sql_delete.cc +++ b/sql/sql_delete.cc @@ -69,13 +69,13 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, Test if the user wants to delete all rows and deletion doesn't have any side-effects (because of triggers), so we can use optimized handler::delete_all_rows() method. - - If row-based replication is used, we also delete the table row by - row. + We implement fast TRUNCATE for InnoDB even if triggers are present. + TRUNCATE ignores triggers. */ if (!using_limit && const_cond && (!conds || conds->val_int()) && !(specialflag & (SPECIAL_NO_NEW_FUNC | SPECIAL_SAFE_MODE)) && - !(table->triggers && table->triggers->has_delete_triggers()) && + (thd->lex->sql_command == SQLCOM_TRUNCATE || + !(table->triggers && table->triggers->has_delete_triggers())) && !thd->current_stmt_binlog_row_based) { /* Update the table->file->stats.records number */ @@ -153,7 +153,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, if (order && order->elements) { - uint length; + uint length= 0; SORT_FIELD *sortorder; TABLE_LIST tables; List<Item> fields; @@ -173,7 +173,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, DBUG_RETURN(TRUE); } - if (!select && limit != HA_POS_ERROR) + if ((!select || table->quick_keys.is_clear_all()) && limit != HA_POS_ERROR) usable_index= get_index_for_order(table, (ORDER*)(order->first), limit); if (usable_index == MAX_KEY) @@ -377,6 +377,7 @@ bool mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, Item **conds) Item *fake_conds= 0; SELECT_LEX *select_lex= &thd->lex->select_lex; DBUG_ENTER("mysql_prepare_delete"); + List<Item> all_fields; thd->lex->allow_sum_func= 0; if (setup_tables_and_check_access(thd, &thd->lex->select_lex.context, @@ -400,6 +401,11 @@ bool mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, Item **conds) DBUG_RETURN(TRUE); } } + + if (select_lex->inner_refs_list.elements && + fix_inner_refs(thd, all_fields, select_lex, select_lex->ref_pointer_array)) + DBUG_RETURN(-1); + select_lex->fix_prepare_information(thd, conds, &fake_conds); DBUG_RETURN(FALSE); } |