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Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

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into  rakia.(none):/home/kgeorge/mysql/autopush/B22342-5.0-opt


sql/opt_range.cc:
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2006-10-16 19:46:02 +03:00
parent 40197cd33f decf9082fb
commit 6caacb9bbd
4 changed files with 75 additions and 0 deletions
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20
mysql-test/r/group_min_max.result
View File

@ -2142,3 +2142,23 @@ t1;
id2 id3 id5 id4 id3 id6 id5 id1
1 1 1 1 1 1 1 1
DROP TABLE t1,t2,t3,t4,t5,t6;
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a,b), KEY b (b));
INSERT INTO t1 VALUES (1,1),(1,2);
explain SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,b PRIMARY 8 NULL 2 Using where; Using index for group-by
SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a;
MAX(b) a
1 1
SELECT MIN(b), a FROM t1 WHERE b > 1 AND a = 1 GROUP BY a;
MIN(b) a
2 1
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a,b,c));
INSERT INTO t2 SELECT a,b,b FROM t1;
explain SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range PRIMARY PRIMARY 12 NULL 2 Using where; Using index for group-by
SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a;
MIN(c)
2
DROP TABLE t1,t2;

16
mysql-test/t/group_min_max.test
View File

@ -794,3 +794,19 @@ SELECT * FROM
t1;
DROP TABLE t1,t2,t3,t4,t5,t6;
#
# Bug#22342: No results returned for query using max and group by
#
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a,b), KEY b (b));
INSERT INTO t1 VALUES (1,1),(1,2);
explain SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a;
SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a;
SELECT MIN(b), a FROM t1 WHERE b > 1 AND a = 1 GROUP BY a;
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a,b,c));
INSERT INTO t2 SELECT a,b,b FROM t1;
explain SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a;
SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a;
DROP TABLE t1,t2;