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Added a test case for LP bug #823835 - a duplicate of bug 823189.

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This commit is contained in:
Igor Babaev 2011-08-11 22:34:41 -07:00
parent 8b56830f7b
commit 07e9d34c54
2 changed files with 50 additions and 0 deletions
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27
mysql-test/r/derived_view.result
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@ -1243,4 +1243,31 @@ a b
1 NULL 1 NULL
DROP VIEW v1; DROP VIEW v1;
DROP TABLE t1,t2; DROP TABLE t1,t2;
#
# LP bug #823835: a duplicate of #823189 with derived table
#
CREATE TABLE t1 (a varchar(32)) ;
INSERT INTO t1 VALUES ('r'), ('p');
CREATE TABLE t2 (a int NOT NULL, b varchar(32)) ;
INSERT INTO t2 VALUES (28,'j');
CREATE TABLE t3 (a int);
INSERT INTO t3 VALUES (0), (0);
EXPLAIN EXTENDED
SELECT * FROM (SELECT * FROM t1) AS t
WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a)
WHERE t2.b < t.a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where
3 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1 100.00
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1276 Field or reference 't.a' of SELECT #3 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where exists(select 28 from `test`.`t2` left join `test`.`t3` on((`test`.`t3`.`a` = 28)) where ('j' < `test`.`t1`.`a`))
SELECT * FROM (SELECT * FROM t1) AS t
WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a)
WHERE t2.b < t.a);
a
r
p
DROP TABLE t1,t2,t3;
set optimizer_switch=@exit_optimizer_switch; set optimizer_switch=@exit_optimizer_switch;

23
mysql-test/t/derived_view.test
View File

@ -760,5 +760,28 @@ SELECT * FROM v1 WHERE b IS NULL;
DROP VIEW v1; DROP VIEW v1;
DROP TABLE t1,t2; DROP TABLE t1,t2;
--echo #
--echo # LP bug #823835: a duplicate of #823189 with derived table
--echo #
CREATE TABLE t1 (a varchar(32)) ;
INSERT INTO t1 VALUES ('r'), ('p');
CREATE TABLE t2 (a int NOT NULL, b varchar(32)) ;
INSERT INTO t2 VALUES (28,'j');
CREATE TABLE t3 (a int);
INSERT INTO t3 VALUES (0), (0);
EXPLAIN EXTENDED
SELECT * FROM (SELECT * FROM t1) AS t
WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a)
WHERE t2.b < t.a);
SELECT * FROM (SELECT * FROM t1) AS t
WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a)
WHERE t2.b < t.a);
DROP TABLE t1,t2,t3;
# The following command must be the last one the file # The following command must be the last one the file
set optimizer_switch=@exit_optimizer_switch; set optimizer_switch=@exit_optimizer_switch;