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Merge rurik.mysql.com:/home/igor/mysql-5.0

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into  rurik.mysql.com:/home/igor/dev/mysql-5.0-0


mysql-test/r/subselect.result:
  Auto merged
sql/sql_select.cc:
  Auto merged
This commit is contained in:
unknown
2006-02-19 17:26:06 -08:00
parent 34d8c57208 731f13f649
commit f37ebdb209
3 changed files with 63 additions and 14 deletions
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26
mysql-test/r/subselect.result
View File

@ -3131,3 +3131,29 @@ a sum
3 20
4 40
DROP TABLE t1,t2,t3;
CREATE TABLE t1 (a varchar(5), b varchar(10));
INSERT INTO t1 VALUES
('AAA', 5), ('BBB', 4), ('BBB', 1), ('CCC', 2),
('CCC', 7), ('AAA', 2), ('AAA', 4), ('BBB', 3), ('AAA', 8);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
BBB 4
CCC 7
AAA 8
EXPLAIN
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 9 Using temporary; Using filesort
ALTER TABLE t1 ADD INDEX(a);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
BBB 4
CCC 7
AAA 8
EXPLAIN
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 9 Using where
2 DEPENDENT SUBQUERY t1 index NULL a 8 NULL 9 Using filesort
DROP TABLE t1;

22
mysql-test/t/subselect.test
View File

@ -2051,3 +2051,25 @@ SELECT t1.a, SUM(b) AS sum FROM t1 GROUP BY t1.a
HAVING t2.c+sum > 20);
DROP TABLE t1,t2,t3;
#
# Test for bug #16603: GROUP BY in a row subquery with a quantifier
# when an index is defined on the grouping field
CREATE TABLE t1 (a varchar(5), b varchar(10));
INSERT INTO t1 VALUES
('AAA', 5), ('BBB', 4), ('BBB', 1), ('CCC', 2),
('CCC', 7), ('AAA', 2), ('AAA', 4), ('BBB', 3), ('AAA', 8);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
EXPLAIN
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
ALTER TABLE t1 ADD INDEX(a);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
EXPLAIN
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
DROP TABLE t1;