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drop table if exists t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by key (a);
select count(*) from t1;
count(*)
0
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`b` int(11) NOT NULL,
`c` int(11) NOT NULL,
PRIMARY KEY (`a`,`b`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY KEY (a)
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by key (a, b);
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by key (a)
partitions 3
(partition x1, partition x2, partition x3);
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by key (a)
partitions 3
(partition x1 nodegroup 0,
partition x2 nodegroup 1,
partition x3 nodegroup 2);
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by key (a)
partitions 3
(partition x1 engine myisam,
partition x2 engine myisam,
partition x3 engine myisam);
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by key (a)
partitions 3
(partition x1 tablespace ts1,
partition x2 tablespace ts2,
partition x3 tablespace ts3);
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by list (a)
partitions 3
(partition x1 values in (1,2,9,4) tablespace ts1,
partition x2 values in (3, 11, 5, 7) tablespace ts2,
partition x3 values in (16, 8, 5+19, 70-43) tablespace ts3);
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by list (b*a)
partitions 3
(partition x1 values in (1,2,9,4) tablespace ts1,
partition x2 values in (3, 11, 5, 7) tablespace ts2,
partition x3 values in (16, 8, 5+19, 70-43) tablespace ts3);
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by list (b*a)
(partition x1 values in (1) tablespace ts1,
partition x2 values in (3, 11, 5, 7) tablespace ts2,
partition x3 values in (16, 8, 5+19, 70-43) tablespace ts3);
drop table t1;
CREATE TABLE t1 (
a int not null)
partition by key(a);
LOCK TABLES t1 WRITE;
insert into t1 values (1);
insert into t1 values (2);
insert into t1 values (3);
insert into t1 values (4);
UNLOCK TABLES;
drop table t1;
CREATE TABLE `t1` (
`id` int(11) default NULL
) ENGINE=BLACKHOLE DEFAULT CHARSET=latin1 PARTITION BY HASH (id) ;
SELECT * FROM t1;
id
drop table t1;
create table t1
(a int)
partition by range (a)
( partition p0 values less than(10),
partition p1 values less than (20),
partition p2 values less than maxvalue);
alter table t1 reorganise partition p2 into (partition p2 values less than (30));
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (a) (PARTITION p0 VALUES LESS THAN (10) ENGINE = MyISAM, PARTITION p1 VALUES LESS THAN (20) ENGINE = MyISAM, PARTITION p2 VALUES LESS THAN (30) ENGINE = MyISAM)
drop table t1;
CREATE TABLE t1 (a int, b int)
PARTITION BY RANGE (a)
(PARTITION x0 VALUES LESS THAN (2),
PARTITION x1 VALUES LESS THAN (4),
PARTITION x2 VALUES LESS THAN (6),
PARTITION x3 VALUES LESS THAN (8),
PARTITION x4 VALUES LESS THAN (10),
PARTITION x5 VALUES LESS THAN (12),
PARTITION x6 VALUES LESS THAN (14),
PARTITION x7 VALUES LESS THAN (16),
PARTITION x8 VALUES LESS THAN (18),
PARTITION x9 VALUES LESS THAN (20));
ALTER TABLE t1 REORGANISE PARTITION x0,x1,x2 INTO
(PARTITION x1 VALUES LESS THAN (6));
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 PARTITION BY RANGE (a) (PARTITION x1 VALUES LESS THAN (6) ENGINE = MyISAM, PARTITION x3 VALUES LESS THAN (8) ENGINE = MyISAM, PARTITION x4 VALUES LESS THAN (10) ENGINE = MyISAM, PARTITION x5 VALUES LESS THAN (12) ENGINE = MyISAM, PARTITION x6 VALUES LESS THAN (14) ENGINE = MyISAM, PARTITION x7 VALUES LESS THAN (16) ENGINE = MyISAM, PARTITION x8 VALUES LESS THAN (18) ENGINE = MyISAM, PARTITION x9 VALUES LESS THAN (20) ENGINE = MyISAM)
drop table t1;
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