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Bug#46362: Endpoint should be set to false for TO_DAYS(DATE)

Browse Source 
There were a problem since pruning uses the field
for comparison (while evaluate_join_record uses longlong),
resulting in pruning failures when comparing DATE to DATETIME.

Fix was to always comparing DATE vs DATETIME as DATETIME,
by adding ' 00:00:00' to the DATE string.

And adding optimization for comparing with 23:59:59, so that
DATETIME_col > '2001-02-03 23:59:59' ->
TO_DAYS(DATETIME_col) > TO_DAYS('2001-02-03 23:59:59') instead
of '>='.
This commit is contained in:
Mattias Jonsson
2009-08-26 12:51:23 +02:00
parent 10e90a1fe5
commit 3b756a01a0
7 changed files with 989 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

308
mysql-test/t/partition_pruning.test
View File

@@ -8,6 +8,314 @@
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
--enable_warnings
#
# Bug#46362: Endpoint should be set to false for TO_DAYS(DATE)
#
# There is a problem when comparing DATE with DATETIME.
# In pruning it is converted into the field type
# and in row evaluation it is converted to longlong
# (like a DATETIME).
--echo # Test with DATETIME column NOT NULL
CREATE TABLE t1 (
a int(10) unsigned NOT NULL,
b DATETIME NOT NULL,
PRIMARY KEY (a, b)
) PARTITION BY RANGE (TO_DAYS(b))
(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')),
PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')),
PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')),
PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')),
PARTITION p20090405 VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'),
(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-02 23:59:59'),
(1, '2009-04-03'), (2, '2009-04-03'), (1, '2009-04-04'), (2, '2009-04-04'),
(1, '2009-04-05'), (1, '2009-04-06'), (1, '2009-04-07');
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME);
DROP TABLE t1;
--echo # Test with DATE column NOT NULL
CREATE TABLE t1 (
a int(10) unsigned NOT NULL,
b DATE NOT NULL,
PRIMARY KEY (a, b)
) PARTITION BY RANGE (TO_DAYS(b))
(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')),
PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')),
PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')),
PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')),
PARTITION p20090405 VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'),
(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-03'), (2, '2009-04-03'),
(1, '2009-04-04'), (2, '2009-04-04'), (1, '2009-04-05'), (1, '2009-04-06'),
(1, '2009-04-07');
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME);
DROP TABLE t1;
--echo # Test with DATETIME column NULL
CREATE TABLE t1 (
a int(10) unsigned NOT NULL,
b DATETIME NULL
) PARTITION BY RANGE (TO_DAYS(b))
(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')),
PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')),
PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')),
PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')),
PARTITION p20090405 VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'),
(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-02 23:59:59'),
(1, '2009-04-03'), (2, '2009-04-03'), (1, '2009-04-04'), (2, '2009-04-04'),
(1, '2009-04-05'), (1, '2009-04-06'), (1, '2009-04-07');
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME);
DROP TABLE t1;
--echo # Test with DATE column NULL
CREATE TABLE t1 (
a int(10) unsigned NOT NULL,
b DATE NULL
) PARTITION BY RANGE (TO_DAYS(b))
(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')),
PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')),
PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')),
PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')),
PARTITION p20090405 VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (1, '2009-01-01'), (1, '2009-04-01'), (2, '2009-04-01'),
(1, '2009-04-02'), (2, '2009-04-02'), (1, '2009-04-03'), (2, '2009-04-03'),
(1, '2009-04-04'), (2, '2009-04-04'), (1, '2009-04-05'), (1, '2009-04-06'),
(1, '2009-04-07');
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:59' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > CAST('2009-04-03' AS DATE);
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03 00:00:00';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-02 23:59:59';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b <= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b = '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b >= '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b > '2009-04-03';
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-03 00:00:01' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b < CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b <= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b = CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b >= CAST('2009-04-02 23:59:58' AS DATETIME);
EXPLAIN PARTITIONS SELECT * FROM t1
WHERE b > CAST('2009-04-02 23:59:58' AS DATETIME);
DROP TABLE t1;
--echo # For better code coverage of the patch
CREATE TABLE t1 (
a int(10) unsigned NOT NULL,
b DATE
) PARTITION BY RANGE ( TO_DAYS(b) )
(PARTITION p20090401 VALUES LESS THAN (TO_DAYS('2009-04-02')),
PARTITION p20090402 VALUES LESS THAN (TO_DAYS('2009-04-03')),
PARTITION p20090403 VALUES LESS THAN (TO_DAYS('2009-04-04')),
PARTITION p20090404 VALUES LESS THAN (TO_DAYS('2009-04-05')),
PARTITION p20090405 VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (1, '2009-01-01'), (2, NULL);
--echo # test with an invalid date, which lead to item->null_value is set.
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE b < CAST('2009-04-99' AS DATETIME);
DROP TABLE t1;
#
# Bug#40972: some sql execution lead the whole database crashing
#