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drop table if exists t1;
create table t1 (a int, b int)
partition by list column_list(a,b)
( partition p0 values in (column_list(1, NULL), column_list(2, NULL),
column_list(NULL, NULL)),
partition p1 values in (column_list(1,1), column_list(2,2)),
partition p2 values in (column_list(3, NULL), column_list(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
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 ( COLUMN_LIST(1,NULL), COLUMN_LIST(2,NULL), COLUMN_LIST(NULL,NULL)) ENGINE = MyISAM,
PARTITION p1 VALUES IN ( COLUMN_LIST(1,1), COLUMN_LIST(2,2)) ENGINE = MyISAM,
PARTITION p2 VALUES IN ( COLUMN_LIST(3,NULL), COLUMN_LIST(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 (column_list(2), column_list(1)),
partition p1 values in (column_list(4), column_list(NULL), column_list(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 ( COLUMN_LIST(2), COLUMN_LIST(1)) ENGINE = MyISAM,
PARTITION p1 VALUES IN ( COLUMN_LIST(4), COLUMN_LIST(NULL), COLUMN_LIST(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 (column_list(1, NULL, MAXVALUE, NULL)),
partition p1 values less than (column_list(1, 'a', MAXVALUE, TO_DAYS('1999-01-01'))),
partition p2 values less than (column_list(1, 'a', MAXVALUE, MAXVALUE)),
partition p3 values less than (column_list(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 (column_list(1,'abc','abc')),
partition p1 values less than (column_list(2,'abc','abc')),
partition p2 values less than (column_list(3,'abc','abc')),
partition p3 values less than (column_list(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 (column_list(1, 'A', 1)),
partition p1 values less than (column_list(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 (column_list('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 (column_list('2000-01-01')),
partition p1 values less than (column_list('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 (column_list(null, 10)));
drop table t1;
create table t1 (d date)
partition by range column_list(d)
( partition p0 values less than (column_list('2000-01-01')),
partition p1 values less than (column_list('2009-01-01')));
drop table t1;
create table t1 (d date)
partition by range column_list(d)
( partition p0 values less than (column_list('1999-01-01')),
partition p1 values less than (column_list('2000-01-01')));
drop table t1;
create table t1 (d date)
partition by range column_list(d)
( partition p0 values less than (column_list('2000-01-01')),
partition p1 values less than (column_list('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 (column_list(99,99)),
partition p1 values less than (column_list(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 (column_list(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 (column_list(maxvalue,maxvalue)));
drop table t1;
create table t1 (a int)
partition by list column_list(a)
(partition p0 values in (column_list(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 (column_list('H23456')),
partition p1 values less than (column_list('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 (column_list(H23456)),
partition p1 values less than (column_list(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 (column_list(23456)),
partition p1 values less than (column_list(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 (column_list(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 (column_list(1, NULL)),
partition p1 values less than (column_list(2, maxvalue)),
partition p2 values less than (column_list(3, 3)),
partition p3 values less than (column_list(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 (column_list(1,2)),
partition p1 values less than (column_list(3,3)),
partition p2 values less than (column_list(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 (column_list(2,2)),
partition p12 values less than (column_list(3,3)));
alter table t1 reorganize partition p0 into
(partition p01 values less than (column_list(0,3)),
partition p02 values less than (column_list(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(column_list(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 (column_list(4,7)),
partition p22 values less than (column_list(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 (column_list(0,0), column_list(1,1)),
partition p1 values in (column_list(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 (column_list('a','b','c')));
alter table t1 add partition
(partition p1 values less than (column_list('b','c','d')));
drop table t1;
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