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create table t1 (a int) engine=innodb partition by hash(a) ;
show table status like 't1';
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t1 InnoDB 10 Compact 2 8192 16384 0 0 0 NULL NULL NULL NULL latin1_swedish_ci NULL partitioned
drop table t1;
create table t1 (a int)
engine = innodb
partition by key (a);
show table status;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t1 InnoDB 10 Compact 2 8192 16384 0 0 0 NULL NULL NULL NULL latin1_swedish_ci NULL partitioned
insert into t1 values (0), (1), (2), (3);
show table status;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t1 InnoDB 10 Compact 4 4096 16384 0 0 0 NULL NULL NULL NULL latin1_swedish_ci NULL partitioned
drop table t1;
create table t1 (a int auto_increment primary key)
engine = innodb
partition by key (a);
show table status;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t1 InnoDB 10 Compact 2 8192 16384 0 0 0 1 NULL NULL NULL latin1_swedish_ci NULL partitioned
insert into t1 values (NULL), (NULL), (NULL), (NULL);
show table status;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t1 InnoDB 10 Compact 4 4096 16384 0 0 0 5 NULL NULL NULL latin1_swedish_ci NULL partitioned
insert into t1 values (NULL), (NULL), (NULL), (NULL);
show table status;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
t1 InnoDB 10 Compact 8 2048 16384 0 0 0 9 NULL NULL NULL latin1_swedish_ci NULL partitioned
drop table t1;
create table t1 (a int)
partition by key (a)
(partition p1 engine = innodb);
alter table t1 rebuild partition p1;
alter table t1 rebuild partition p1;
alter table t1 rebuild partition p1;
alter table t1 rebuild partition p1;
alter table t1 rebuild partition p1;
alter table t1 rebuild partition p1;
alter table t1 rebuild partition p1;
drop table t1;
create table t1 (a date)
engine = innodb
partition by range (year(a))
(partition p0 values less than (2006),
partition p1 values less than (2007));
explain partitions select * from t1
where a between '2006-01-01' and '2007-06-01';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1 ALL NULL NULL NULL NULL 2 Using where
drop table t1;
create table t1 (a int)
engine = x
partition by key (a);
Warnings:
Warning 1286 Unknown table engine 'x'
Warning 1266 Using storage engine MyISAM for table 't1'
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) */
drop table t1;
create table t1 (a int)
engine = innodb
partition by list (a)
(partition p0 values in (0));
alter table t1 engine = x;
Warnings:
Warning 1286 Unknown table engine 'x'
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 /*!50100 PARTITION BY LIST (a) (PARTITION p0 VALUES IN (0) ENGINE = InnoDB) */
drop table t1;
create table t1
(
id int unsigned auto_increment,
time datetime not null,
first_name varchar(40),
last_name varchar(50),
primary key (id, time),
index first_index (first_name),
index last_index (last_name)
) engine=Innodb partition by range (to_days(time)) (
partition p1 values less than (to_days('2007-02-07')),
partition p2 values less than (to_days('2007-02-08')),
partition p3 values less than MAXVALUE
);
insert into t1 (time, first_name, last_name) values ('2007-02-07', 'Q', 'Robert'),
('2007-02-07', 'Mark', 'Nate'), ('2007-02-07', 'Nate', 'Oscar'),
('2007-02-07', 'Zack', 'Alice'), ('2007-02-07', 'Jack', 'Kathy'),
('2007-02-06', 'Alice', 'Alice'), ('2007-02-06', 'Brian', 'Charles'),
('2007-02-06', 'Charles', 'David'), ('2007-02-06', 'David', 'Eric'),
('2007-02-07', 'Hector', 'Isaac'), ('2007-02-07', 'Oscar', 'Patricia'),
('2007-02-07', 'Patricia', 'Q'), ('2007-02-07', 'X', 'Yuri'),
('2007-02-07', 'Robert', 'Shawn'), ('2007-02-07', 'Kathy', 'Lois'),
('2007-02-07', 'Eric', 'Francis'), ('2007-02-06', 'Shawn', 'Theron'),
('2007-02-06', 'U', 'Vincent'), ('2007-02-06', 'Francis', 'George'),
('2007-02-06', 'George', 'Hector'), ('2007-02-06', 'Vincent', 'Walter'),
('2007-02-06', 'Walter', 'X'), ('2007-02-07', 'Lois', 'Mark'),
('2007-02-07', 'Yuri', 'Zack'), ('2007-02-07', 'Isaac', 'Jack'),
('2007-02-07', 'Sharon', 'Mark'), ('2007-02-07', 'Michael', 'Michelle'),
('2007-02-07', 'Derick', 'Nathan'), ('2007-02-07', 'Peter', 'Xavier'),
('2007-02-07', 'Fred', 'Harold'), ('2007-02-07', 'Katherine', 'Lisa'),
('2007-02-07', 'Tom', 'Rina'), ('2007-02-07', 'Jerry', 'Victor'),
('2007-02-07', 'Alexander', 'Terry'), ('2007-02-07', 'Justin', 'John'),
('2007-02-07', 'Greg', 'Ernest'), ('2007-02-07', 'Robert', 'Q'),
('2007-02-07', 'Nate', 'Mark'), ('2007-02-07', 'Oscar', 'Nate'),
('2007-02-07', 'Alice', 'Zack'), ('2007-02-07', 'Kathy', 'Jack'),
('2007-02-06', 'Alice', 'Alice'), ('2007-02-06', 'Charles', 'Brian'),
('2007-02-06', 'David', 'Charles'), ('2007-02-06', 'Eric', 'David'),
('2007-02-07', 'Isaac', 'Hector'), ('2007-02-07', 'Patricia', 'Oscar'),
('2007-02-07', 'Q', 'Patricia'), ('2007-02-07', 'Yuri', 'X'),
('2007-02-07', 'Shawn', 'Robert'), ('2007-02-07', 'Lois', 'Kathy'),
('2007-02-07', 'Francis', 'Eric'), ('2007-02-06', 'Theron', 'Shawn'),
('2007-02-06', 'Vincent', 'U'), ('2007-02-06', 'George', 'Francis'),
('2007-02-06', 'Hector', 'George'), ('2007-02-06', 'Walter', 'Vincent'),
('2007-02-06', 'X', 'Walter'), ('2007-02-07', 'Mark', 'Lois'),
('2007-02-07', 'Zack', 'Yuri'), ('2007-02-07', 'Jack', 'Isaac'),
('2007-02-07', 'Mark', 'Sharon'), ('2007-02-07', 'Michelle', 'Michael'),
('2007-02-07', 'Nathan', 'Derick'), ('2007-02-07', 'Xavier', 'Peter'),
('2007-02-07', 'Harold', 'Fred'), ('2007-02-07', 'Lisa', 'Katherine'),
('2007-02-07', 'Rina', 'Tom'), ('2007-02-07', 'Victor', 'Jerry'),
('2007-02-07', 'Terry', 'Alexander'), ('2007-02-07', 'John', 'Justin'),
('2007-02-07', 'Ernest', 'Greg');
SELECT * FROM t1 WHERE first_name='Andy' OR last_name='Jake';
id time first_name last_name
drop table t1;
CREATE TABLE t1 (a DOUBLE NOT NULL, KEY(a)) ENGINE=InnoDB
PARTITION BY KEY(a) PARTITIONS 10;
INSERT INTO t1 VALUES(1),(2);
SELECT COUNT(*) FROM t1;
COUNT(*)
2
DROP TABLE t1;
create table t1 (int_column int, char_column char(5))
PARTITION BY RANGE (int_column) subpartition by key (char_column) subpartitions 2
(PARTITION p1 VALUES LESS THAN (5) ENGINE = InnoDB);
alter table t1 PARTITION BY RANGE (int_column)
subpartition by key (char_column) subpartitions 2
(PARTITION p1 VALUES LESS THAN (5) ENGINE = myisam);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`int_column` int(11) DEFAULT NULL,
`char_column` char(5) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (int_column) SUBPARTITION BY KEY (char_column) SUBPARTITIONS 2 (PARTITION p1 VALUES LESS THAN (5) ENGINE = MyISAM) */
drop table t1;
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