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Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-5.1-opt

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into  mysql.com:/home/psergey/mysql-5.1-bug27927
This commit is contained in:
sergefp@pylon.mylan
2007-09-14 14:25:45 +04:00
parent 0b7e4b4dde 41404ec52e
commit 003bb7b994
8 changed files with 182 additions and 27 deletions
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28
mysql-test/r/partition_pruning.result
View File

@ -911,3 +911,31 @@ explain partitions select * from t1 where a>-2 and a <=0;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p3 ALL NULL NULL NULL NULL 4 Using where
drop table t1;
CREATE TABLE t1 ( recdate DATETIME NOT NULL )
PARTITION BY RANGE( TO_DAYS(recdate) ) (
PARTITION p0 VALUES LESS THAN ( TO_DAYS('2007-03-08') ),
PARTITION p1 VALUES LESS THAN ( TO_DAYS('2007-04-01') )
);
INSERT INTO t1 VALUES ('2007-03-01 12:00:00');
INSERT INTO t1 VALUES ('2007-03-07 12:00:00');
INSERT INTO t1 VALUES ('2007-03-08 12:00:00');
INSERT INTO t1 VALUES ('2007-03-15 12:00:00');
must use p0 only:
explain partitions select * from t1 where recdate < '2007-03-08 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where
drop table t1;
CREATE TABLE t1 ( recdate DATETIME NOT NULL )
PARTITION BY RANGE( YEAR(recdate) ) (
PARTITION p0 VALUES LESS THAN (2006),
PARTITION p1 VALUES LESS THAN (2007)
);
INSERT INTO t1 VALUES ('2005-03-01 12:00:00');
INSERT INTO t1 VALUES ('2005-03-01 12:00:00');
INSERT INTO t1 VALUES ('2006-03-01 12:00:00');
INSERT INTO t1 VALUES ('2006-03-01 12:00:00');
must use p0 only:
explain partitions select * from t1 where recdate < '2006-01-01 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 2 Using where
drop table t1;

31
mysql-test/t/partition_pruning.test
View File

@ -761,3 +761,34 @@ insert into t1 values (-15),(-5),(5),(15),(-15),(-5),(5),(15);
explain partitions select * from t1 where a>-2 and a <=0;
drop table t1;
#
# BUG#27927 Partition pruning not optimal with TO_DAYS function
#
CREATE TABLE t1 ( recdate DATETIME NOT NULL )
PARTITION BY RANGE( TO_DAYS(recdate) ) (
PARTITION p0 VALUES LESS THAN ( TO_DAYS('2007-03-08') ),
PARTITION p1 VALUES LESS THAN ( TO_DAYS('2007-04-01') )
);
INSERT INTO t1 VALUES ('2007-03-01 12:00:00');
INSERT INTO t1 VALUES ('2007-03-07 12:00:00');
INSERT INTO t1 VALUES ('2007-03-08 12:00:00');
INSERT INTO t1 VALUES ('2007-03-15 12:00:00');
-- echo must use p0 only:
explain partitions select * from t1 where recdate < '2007-03-08 00:00:00';
drop table t1;
CREATE TABLE t1 ( recdate DATETIME NOT NULL )
PARTITION BY RANGE( YEAR(recdate) ) (
PARTITION p0 VALUES LESS THAN (2006),
PARTITION p1 VALUES LESS THAN (2007)
);
INSERT INTO t1 VALUES ('2005-03-01 12:00:00');
INSERT INTO t1 VALUES ('2005-03-01 12:00:00');
INSERT INTO t1 VALUES ('2006-03-01 12:00:00');
INSERT INTO t1 VALUES ('2006-03-01 12:00:00');
-- echo must use p0 only:
explain partitions select * from t1 where recdate < '2006-01-01 00:00:00';
drop table t1;