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Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

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into  magare.gmz:/home/kgeorge/mysql/autopush/B26186-5.0-opt


sql/sql_delete.cc:
  Auto merged
This commit is contained in:
unknown
2007-03-22 18:55:52 +02:00
parent 33da0f3736 4e4152c56f
commit 704f0f03ee
3 changed files with 48 additions and 16 deletions
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9
mysql-test/r/delete.result
View File

@ -214,3 +214,12 @@ select count(*) from t1;
count(*)
0
drop table t1;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);
DELETE FROM t1 ORDER BY x;
ERROR 42S22: Unknown column 'x' in 'order clause'
DELETE FROM t1 ORDER BY t2.x;
ERROR 42S22: Unknown column 't2.x' in 'order clause'
DELETE FROM t1 ORDER BY (SELECT x);
ERROR 42S22: Unknown column 'x' in 'field list'
DROP TABLE t1;

18
mysql-test/t/delete.test
View File

@ -203,3 +203,21 @@ select * from t1 where a is null;
delete from t1 where a is null;
select count(*) from t1;
drop table t1;
#
# Bug #26186: delete order by, sometimes accept unknown column
#
CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1);
--error ER_BAD_FIELD_ERROR
DELETE FROM t1 ORDER BY x;
# even columns from a table not used in query (and not even existing)
--error ER_BAD_FIELD_ERROR
DELETE FROM t1 ORDER BY t2.x;
# subquery (as long as the subquery from is valid or DUAL)
--error ER_BAD_FIELD_ERROR
DELETE FROM t1 ORDER BY (SELECT x);
DROP TABLE t1;

37
sql/sql_delete.cc
View File

@ -60,6 +60,27 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
if (mysql_prepare_delete(thd, table_list, &conds))
DBUG_RETURN(TRUE);
/* check ORDER BY even if it can be ignored */
if (order && order->elements)
{
TABLE_LIST tables;
List<Item> fields;
List<Item> all_fields;
bzero((char*) &tables,sizeof(tables));
tables.table = table;
tables.alias = table_list->alias;
if (select_lex->setup_ref_array(thd, order->elements) ||
setup_order(thd, select_lex->ref_pointer_array, &tables,
fields, all_fields, (ORDER*) order->first))
{
delete select;
free_underlaid_joins(thd, &thd->lex->select_lex);
DBUG_RETURN(TRUE);
}
}
const_cond= (!conds || conds->const_item());
safe_update=test(thd->options & OPTION_SAFE_UPDATES);
if (safe_update && const_cond)
@ -148,24 +169,8 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
{
uint length= 0;
SORT_FIELD *sortorder;
TABLE_LIST tables;
List<Item> fields;
List<Item> all_fields;
ha_rows examined_rows;
bzero((char*) &tables,sizeof(tables));
tables.table = table;
tables.alias = table_list->alias;
if (select_lex->setup_ref_array(thd, order->elements) ||
setup_order(thd, select_lex->ref_pointer_array, &tables,
fields, all_fields, (ORDER*) order->first))
{
delete select;
free_underlaid_joins(thd, &thd->lex->select_lex);
DBUG_RETURN(TRUE);
}
if ((!select || table->quick_keys.is_clear_all()) && limit != HA_POS_ERROR)
usable_index= get_index_for_order(table, (ORDER*)(order->first), limit);