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Diffstat (limited to 'mysql-test/t/partition_pruning.test')
| -rw-r--r-- | mysql-test/t/partition_pruning.test | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/mysql-test/t/partition_pruning.test b/mysql-test/t/partition_pruning.test index 12951c9232a..31008d2b011 100644 --- a/mysql-test/t/partition_pruning.test +++ b/mysql-test/t/partition_pruning.test @@ -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; |