diff options
Diffstat (limited to 'mysql-test')
| -rw-r--r-- | mysql-test/r/ps.result | 18 | ||||
| -rw-r--r-- | mysql-test/t/ps.test | 14 |
2 files changed, 32 insertions, 0 deletions
diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result index 4ee72f10785..f1f779ef03f 100644 --- a/mysql-test/r/ps.result +++ b/mysql-test/r/ps.result @@ -5456,5 +5456,23 @@ Note 1003 select (select 1 from `test`.`t2` where 0) AS `(SELECT 1 FROM t2 WHERE DEALLOCATE PREPARE stmt; DROP TABLE t1, t2; # +# MDEV-25576: The statement EXPLAIN running as regular statement and +# as prepared statement produces different results for +# UPDATE with subquery +# +CREATE TABLE t1 (c1 INT KEY) ENGINE=MyISAM; +CREATE TABLE t2 (c2 INT) ENGINE=MyISAM; +CREATE TABLE t3 (c3 INT) ENGINE=MyISAM; +EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 ); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +PREPARE stmt FROM "EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 )"; +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +DEALLOCATE PREPARE stmt; +DROP TABLE t1, t2, t3; # End of 10.2 tests # diff --git a/mysql-test/t/ps.test b/mysql-test/t/ps.test index 5b86f82a9cb..2e7b43ad748 100644 --- a/mysql-test/t/ps.test +++ b/mysql-test/t/ps.test @@ -4946,6 +4946,20 @@ SHOW WARNINGS; DEALLOCATE PREPARE stmt; DROP TABLE t1, t2; + +--echo # +--echo # MDEV-25576: The statement EXPLAIN running as regular statement and +--echo # as prepared statement produces different results for +--echo # UPDATE with subquery --echo # +CREATE TABLE t1 (c1 INT KEY) ENGINE=MyISAM; +CREATE TABLE t2 (c2 INT) ENGINE=MyISAM; +CREATE TABLE t3 (c3 INT) ENGINE=MyISAM; +EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 ); +PREPARE stmt FROM "EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 )"; +EXECUTE stmt; +DEALLOCATE PREPARE stmt; +DROP TABLE t1, t2, t3; + --echo # End of 10.2 tests --echo # |