Merge bk-internal.mysql.com:/home/bk/mysql-5.1-runtime

into  bodhi.(none):/opt/local/work/mysql-5.1-runtime-inc-2

mysql-test/r/group_min_max.result

@@ -2299,8 +2299,7 @@ Handler_read_next	0
 FLUSH STATUS;
 DELETE FROM t3 WHERE (SELECT (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) x 
 FROM t1) > 10000;
-Warnings:
+ERROR 21000: Subquery returns more than 1 row
-Error	1242	Subquery returns more than 1 row
 SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8

mysql-test/r/ps.result

@@ -2680,4 +2680,24 @@ t1	CREATE TABLE `t1` (
   KEY `c` (`c`(10))
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1;
+drop table if exists t1, t2;
+Warnings:
+Note	1051	Unknown table 't1'
+Note	1051	Unknown table 't2'
+create table t1 (a int, b int);
+create table t2 like t1;
+insert into t1 (a, b) values (1,1), (1,2), (1,3), (1,4), (1,5),
+(2,2), (2,3), (2,1), (3,1), (4,1), (4,2), (4,3), (4,4), (4,5), (4,6);
+insert into t2 select a, max(b) from t1 group by a;
+prepare stmt from "delete from t2 where (select (select max(b) from t1 group
+by a having a < 2) x from t1) > 10000";
+delete from t2 where (select (select max(b) from t1 group
+by a having a < 2) x from t1) > 10000;
+ERROR 21000: Subquery returns more than 1 row
+execute stmt;
+ERROR 21000: Subquery returns more than 1 row
+execute stmt;
+ERROR 21000: Subquery returns more than 1 row
+deallocate prepare stmt;
+drop table t1, t2;
 End of 5.1 tests.

mysql-test/t/group_min_max.test

@@ -890,6 +890,7 @@ FLUSH STATUS;
 DELETE FROM t3 WHERE (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) > 10000;
 SHOW STATUS LIKE 'handler_read__e%';
 FLUSH STATUS;
+--error ER_SUBQUERY_NO_1_ROW
 DELETE FROM t3 WHERE (SELECT (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) x 
                       FROM t1) > 10000;
 SHOW STATUS LIKE 'handler_read__e%';

mysql-test/t/ps.test

@@ -2778,4 +2778,37 @@ execute stmt;
 show create table t1;
 drop table t1;
 
+#
+# Bug #32030 DELETE does not return an error and deletes rows if error
+# evaluating WHERE
+#
+# Test that there is an error for prepared delete just like for the normal
+# one.
+#
+
+drop table if exists t1, t2;
+create table t1 (a int, b int);
+create table t2 like t1;
+
+insert into t1 (a, b) values (1,1), (1,2), (1,3), (1,4), (1,5),
+       (2,2), (2,3), (2,1), (3,1), (4,1), (4,2), (4,3), (4,4), (4,5), (4,6);
+
+insert into t2 select a, max(b) from t1 group by a;
+
+prepare stmt from "delete from t2 where (select (select max(b) from t1 group
+by a having a < 2) x from t1) > 10000";
+
+--error ER_SUBQUERY_NO_1_ROW
+delete from t2 where (select (select max(b) from t1 group
+by a having a < 2) x from t1) > 10000;
+--error ER_SUBQUERY_NO_1_ROW
+execute stmt;
+--error ER_SUBQUERY_NO_1_ROW
+execute stmt;
+
+deallocate prepare stmt;
+drop table t1, t2;
+
+
+
 --echo End of 5.1 tests.

sql/sql_delete.cc

@@ -35,6 +35,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
   READ_RECORD	info;
   bool          using_limit=limit != HA_POS_ERROR;
   bool		transactional_table, safe_update, const_cond;
+  bool          const_cond_result;
   ha_rows	deleted= 0;
   uint usable_index= MAX_KEY;
   SELECT_LEX   *select_lex= &thd->lex->select_lex;
@@ -86,6 +87,12 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
 
   select_lex->no_error= thd->lex->ignore;
 
+  const_cond_result= const_cond && (!conds || conds->val_int());
+  if (thd->is_error())
+  {
+    /* Error evaluating val_int(). */
+    DBUG_RETURN(TRUE);
+  }
   /*
     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
@@ -105,7 +112,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
       - We should not be binlogging this statement row-based, and
       - there should be no delete triggers associated with the table.
   */
-  if (!using_limit && const_cond && (!conds || conds->val_int()) &&
+  if (!using_limit && const_cond_result &&
       !(specialflag & (SPECIAL_NO_NEW_FUNC | SPECIAL_SAFE_MODE)) &&
       (thd->lex->sql_command == SQLCOM_TRUNCATE ||
        (!thd->current_stmt_binlog_row_based &&
@@ -300,7 +307,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
     else
       table->file->unlock_row();  // Row failed selection, release lock on it
   }
-  if (thd->killed && !error)
+  if (thd->killed || thd->is_error())
     error= 1;					// Aborted
   if (will_batch && (loc_error= table->file->end_bulk_delete()))
   {