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MDEV-8709 Row equality elements do not get propagated

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The problem was fixed earlier by one of the MDEV-8728 subtasks.
Adding a test case only.
This commit is contained in:
Alexander Barkov 2015-09-11 15:48:34 +04:00
parent 9158212a27
commit aaf6334b64
2 changed files with 40 additions and 0 deletions
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22
mysql-test/r/row.result
View file

@ -489,3 +489,25 @@ SELECT i FROM t1 WHERE ROW(1,2) = (SELECT 1,3 FROM DUAL WHERE 1 = 0);
i i
DROP TABLE t1; DROP TABLE t1;
End of 5.1 tests End of 5.1 tests
#
# Start of 10.1 tests
#
#
# MDEV-8709 Row equality elements do not get propagated
#
CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (10,10),(20,20);
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=10 AND b=10 AND a>=10;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` = 10) and (`test`.`t1`.`b` = 10))
EXPLAIN EXTENDED SELECT * FROM t1 WHERE (a,b)=(10,10) AND a>=10;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` = 10) and (`test`.`t1`.`b` = 10))
DROP TABLE t1;
#
# End of 10.1 tests
#

18
mysql-test/t/row.test
View file

@ -285,3 +285,21 @@ SELECT i FROM t1 WHERE ROW(1,2) = (SELECT 1,3 FROM DUAL WHERE 1 = 0);
DROP TABLE t1; DROP TABLE t1;
--echo End of 5.1 tests --echo End of 5.1 tests
--echo #
--echo # Start of 10.1 tests
--echo #
--echo #
--echo # MDEV-8709 Row equality elements do not get propagated
--echo #
CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (10,10),(20,20);
# Checking that the a>=10 part gets optimized away in both scalar and row notations
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=10 AND b=10 AND a>=10;
EXPLAIN EXTENDED SELECT * FROM t1 WHERE (a,b)=(10,10) AND a>=10;
DROP TABLE t1;
--echo #
--echo # End of 10.1 tests
--echo #