drop table if exists t1;
create table t1 (a int, b int)
partition by key (a,a);
ERROR HY000: Duplicate partition field name a
create table t1 (a int, b int)
partition by list column_list(a,a)
( partition p values in ((1,1)));
ERROR HY000: Duplicate partition field name a
create table t1 (a int signed)
partition by list (a)
( partition p0 values in (1, 3, 5, 7, 9, NULL),
partition p1 values in (2, 4, 6, 8, 0));
insert into t1 values (NULL),(0),(1),(2),(2),(4),(4),(4),(8),(8);
select * from t1 where NULL <= a;
a
select * from t1 where a is null;
a
NULL
explain partitions select * from t1 where a is null;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	10	Using where
select * from t1 where a <= 1;
a
1
0
drop table t1;
create table t1 (a int signed)
partition by list column_list(a)
( partition p0 values in (1, 3, 5, 7, 9, NULL),
partition p1 values in (2, 4, 6, 8, 0));
insert into t1 values (NULL),(0),(1),(2),(2),(4),(4),(4),(8),(8);
select * from t1 where a <= NULL;
a
select * from t1 where a is null;
a
NULL
explain partitions select * from t1 where a is null;
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
select * from t1 where a <= 1;
a
1
0
drop table t1;
create table t1 (a int, b int)
partition by list column_list(a,b)
( partition p0 values in ((1, NULL), (2, NULL), (NULL, NULL)),
partition p1 values in ((1,1), (2,2)),
partition p2 values in ((3, NULL), (NULL, 1)));
insert into t1 values (3, NULL);
insert into t1 values (NULL, 1);
insert into t1 values (NULL, NULL);
insert into t1 values (1, NULL);
insert into t1 values (2, NULL);
insert into t1 values (1,1);
insert into t1 values (2,2);
select * from t1 where a = 1;
a	b
1	NULL
1	1
select * from t1 where a = 2;
a	b
2	NULL
2	2
select * from t1 where a > 8;
a	b
select * from t1 where a not between 8 and 8;
a	b
2	NULL
2	2
3	NULL
1	NULL
1	1
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL,
  `b` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY LIST  COLUMN_LIST(a,b)
(PARTITION p0 VALUES IN ((1,NULL),(2,NULL),(NULL,NULL)) ENGINE = MyISAM,
 PARTITION p1 VALUES IN ((1,1),(2,2)) ENGINE = MyISAM,
 PARTITION p2 VALUES IN ((3,NULL),(NULL,1)) ENGINE = MyISAM) */
drop table t1;
create table t1 (a int)
partition by list (a)
( partition p0 values in (1),
partition p1 values in (1));
ERROR HY000: Multiple definition of same constant in list partitioning
create table t1 (a int)
partition by list (a)
( partition p0 values in (2, 1),
partition p1 values in (4, NULL, 3));
insert into t1 values (1);
insert into t1 values (2);
insert into t1 values (3);
insert into t1 values (4);
insert into t1 values (NULL);
insert into t1 values (5);
ERROR HY000: Table has no partition for value 5
drop table t1;
create table t1 (a int)
partition by list column_list(a)
( partition p0 values in (2, 1),
partition p1 values in ((4), (NULL), (3)));
ERROR 42000: Row expressions in VALUES IN only allowed for multi-field column partitioning near '))' at line 4
create table t1 (a int)
partition by list column_list(a)
( partition p0 values in (2, 1),
partition p1 values in (4, NULL, 3));
insert into t1 values (1);
insert into t1 values (2);
insert into t1 values (3);
insert into t1 values (4);
insert into t1 values (NULL);
insert into t1 values (5);
ERROR HY000: Table has no partition for value from column_list
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
/*!50100 PARTITION BY LIST  COLUMN_LIST(a)
(PARTITION p0 VALUES IN (2,1) ENGINE = MyISAM,
 PARTITION p1 VALUES IN (4,NULL,3) ENGINE = MyISAM) */
drop table t1;
create table t1 (a int, b char(10), c varchar(25), d datetime)
partition by range column_list(a,b,c,d)
subpartition by hash (to_seconds(d))
subpartitions 4
( partition p0 values less than (1, NULL, MAXVALUE, NULL),
partition p1 values less than (1, 'a', MAXVALUE, TO_DAYS('1999-01-01')),
partition p2 values less than (1, 'a', MAXVALUE, MAXVALUE),
partition p3 values less than (1, MAXVALUE, MAXVALUE, MAXVALUE));
drop table t1;
create table t1 (a int, b char(10), c varchar(5), d int)
partition by range column_list(a,b,c)
subpartition by key (c,d)
subpartitions 3
( partition p0 values less than (1,'abc','abc'),
partition p1 values less than (2,'abc','abc'),
partition p2 values less than (3,'abc','abc'),
partition p3 values less than (4,'abc','abc'));
insert into t1 values (1,'a','b',1),(2,'a','b',2),(3,'a','b',3);
insert into t1 values (1,'b','c',1),(2,'b','c',2),(3,'b','c',3);
insert into t1 values (1,'c','d',1),(2,'c','d',2),(3,'c','d',3);
insert into t1 values (1,'d','e',1),(2,'d','e',2),(3,'d','e',3);
select * from t1 where (a = 1 AND b < 'd' AND (c = 'b' OR (c = 'c' AND d = 1)) OR
(a = 1 AND b >= 'a' AND (c = 'c' OR (c = 'd' AND d = 2))));
a	b	c	d
1	a	b	1
1	b	c	1
drop table t1;
create table t1 (a int, b varchar(2), c int)
partition by range column_list (a, b, c)
(partition p0 values less than (1, 'A', 1),
partition p1 values less than (1, 'B', 1));
insert into t1 values (1, 'A', 1);
explain partitions select * from t1 where a = 1 AND b <= 'A' and c = 1;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0,p1	system	NULL	NULL	NULL	NULL	1	
select * from t1 where a = 1 AND b <= 'A' and c = 1;
a	b	c
1	A	1
drop table t1;
create table t1 (a char, b char, c char)
partition by list column_list(a)
( partition p0 values in ('a'));
insert into t1 (a) values ('a');
select * from t1 where a = 'a';
a	b	c
a	NULL	NULL
drop table t1;
create table t1 (d timestamp)
partition by range column_list(d)
( partition p0 values less than ('2000-01-01'),
partition p1 values less than ('2040-01-01'));
ERROR HY000: Partition column values of incorrect type
create table t1 (a int, b int)
partition by range column_list(a,b)
(partition p0 values less than (null, 10));
drop table t1;
create table t1 (d date)
partition by range column_list(d)
( partition p0 values less than ('2000-01-01'),
partition p1 values less than ('2009-01-01'));
drop table t1;
create table t1 (d date)
partition by range column_list(d)
( partition p0 values less than ('1999-01-01'),
partition p1 values less than ('2000-01-01'));
drop table t1;
create table t1 (d date)
partition by range column_list(d)
( partition p0 values less than ('2000-01-01'),
partition p1 values less than ('3000-01-01'));
drop table t1;
create table t1 (a int, b int)
partition by range column_list(a,b)
(partition p2 values less than (99,99),
partition p1 values less than (99,999));
insert into t1 values (99,998);
select * from t1 where b = 998;
a	b
99	998
drop table t1;
create table t1 as select to_seconds(null) as to_seconds;
select data_type from information_schema.columns
where column_name='to_seconds';
data_type
int
drop table t1;
create table t1 (a int, b int)
partition by list column_list(a,b)
(partition p0 values in ((maxvalue,maxvalue)));
ERROR 42000: Cannot use MAXVALUE as value in List partitioning near 'maxvalue,maxvalue)))' at line 3
create table t1 (a int, b int)
partition by range column_list(a,b)
(partition p0 values less than (maxvalue,maxvalue));
drop table t1;
create table t1 (a int)
partition by list column_list(a)
(partition p0 values in (0));
select partition_method from information_schema.partitions where table_name='t1';
partition_method
LIST COLUMN_LIST
drop table t1;
create table t1 (a char(6))
partition by range column_list(a)
(partition p0 values less than ('H23456'),
partition p1 values less than ('M23456'));
insert into t1 values ('F23456');
select * from t1;
a
F23456
drop table t1;
create table t1 (a char(6))
partition by range column_list(a)
(partition p0 values less than (H23456),
partition p1 values less than (M23456));
ERROR 42S22: Unknown column 'H23456' in 'field list'
create table t1 (a char(6))
partition by range column_list(a)
(partition p0 values less than (23456),
partition p1 values less than (23456));
ERROR HY000: VALUES LESS THAN value must be strictly increasing for each partition
create table t1 (a int, b int)
partition by range column_list(a,b)
(partition p0 values less than (10));
ERROR 42000: Inconsistency in usage of column lists for partitioning near '))' at line 3
create table t1 (a int, b int)
partition by range column_list(a,b)
(partition p0 values less than (1,1,1);
ERROR HY000: Inconsistency in usage of column lists for partitioning
create table t1 (a int, b int)
partition by range column_list(a,b)
(partition p0 values less than (1, NULL),
partition p1 values less than (2, maxvalue),
partition p2 values less than (3, 3),
partition p3 values less than (10, NULL));
insert into t1 values (10,0);
ERROR HY000: Table has no partition for value from column_list
insert into t1 values (0,1),(1,1),(2,1),(3,1),(3,4),(4,9),(9,1);
select * from t1;
a	b
0	1
1	1
2	1
3	1
3	4
4	9
9	1
alter table t1
partition by range column_list(b,a)
(partition p0 values less than (1,2),
partition p1 values less than (3,3),
partition p2 values less than (9,5));
explain partitions select * from t1 where b < 2;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0,p1	ALL	NULL	NULL	NULL	NULL	7	Using where
select * from t1 where b < 2;
a	b
0	1
1	1
2	1
3	1
9	1
explain partitions select * from t1 where b < 4;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0,p1,p2	ALL	NULL	NULL	NULL	NULL	7	Using where
select * from t1 where b < 4;
a	b
0	1
1	1
2	1
3	1
9	1
alter table t1 reorganize partition p1 into
(partition p11 values less than (2,2),
partition p12 values less than (3,3));
alter table t1 reorganize partition p0 into
(partition p01 values less than (0,3),
partition p02 values less than (1,1));
ERROR HY000: Reorganize of range partitions cannot change total ranges except for last partition where it can extend the range
alter table t1 reorganize partition p2 into
(partition p2 values less than(9,6,1));
ERROR HY000: Inconsistency in usage of column lists for partitioning
alter table t1 reorganize partition p2 into
(partition p2 values less than (10));
ERROR HY000: Inconsistency in usage of column lists for partitioning
alter table t1 reorganize partition p2 into
(partition p21 values less than (4,7),
partition p22 values less than (9,5));
explain partitions select * from t1 where b < 4;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0,p11,p12,p21	ALL	NULL	NULL	NULL	NULL	7	Using where
select * from t1 where b < 4;
a	b
0	1
1	1
2	1
3	1
9	1
drop table t1;
create table t1 (a int, b int)
partition by list column_list(a,b)
subpartition by hash (b)
subpartitions 2
(partition p0 values in ((0,0), (1,1)),
partition p1 values in ((1000,1000)));
insert into t1 values (1000,1000);
drop table t1;
create table t1 (a char, b char, c char)
partition by range column_list(a,b,c)
( partition p0 values less than ('a','b','c'));
alter table t1 add partition
(partition p1 values less than ('b','c','d'));
drop table t1;