mariadb/mysql-test/r/ps_max_subselect-5113.result at 9fefe973360124f281122a129434a36e661168b9 - mirror/mariadb - May the force be without you: git.fucktheforce.de

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Sergei Golubchik 441192bfb0 MDEV-5113 Wrong result (extra row) and valgrind warnings in Item_maxmin_subselect::any_value on 2nd execution of PS with SELECT subquery

When setting Item_func_not_all::test_sum_item or Item_func_not_all::test_sub_item,
reset the other one to NULL - they can never be set both. When a PS is reexecuted,
different executions might be optimized differently and a wrong test_su*_item
might stay set from the previous execution.

2013-11-12 15:02:25 +01:00

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 CREATE TABLE t1 (b INT NOT NULL);
 INSERT INTO t1 VALUES (0),(8);
 PREPARE stmt FROM '
  SELECT 1 FROM t1 AS o
    WHERE o.b >= ALL (
      SELECT a2.b FROM t1 AS a1 LEFT JOIN t1 AS a2 ON ( a2.b = a1.b )
      WHERE a1.b <= a2.b
   )
 ';
 EXECUTE stmt;
 
 
 EXECUTE stmt;
 
 
 DROP TABLE t1;