MySQL表分区

1.Range(范围)

 按照某个字段的范围进行分区。这种常用在时间字段上。

CREATE TABLE article (
article_id int NOT NULL AUTO_INCREMENT,
article_content varchar(1000),
article_time DATE NOT NULL DEFAULT '1970-01-01',
key(article_id)
)
ENGINE=INNODB
PARTITION BY RANGE (YEAR(article_time)) (
PARTITION p0 VALUES LESS THAN (1991),
PARTITION p1 VALUES LESS THAN (1996),
PARTITION p2 VALUES LESS THAN (2001),
PARTITION p3 VALUES LESS THAN MAXVALUE
) ;

2.Hash(哈希)

 按照表中任意个int类型的字段进行分割

CREATE TABLE part_table (
id int NOT NULL AUTO_INCREMENT,
name varchar(30),
store_id int,
key(id)
)
ENGINE=INNODB
PARTITION BY HASH(store_id) 
PARTITIONS 4;

3.Key(键值)

  Hash partition的进阶版,将主键作为分割的标准

CREATE TABLE part_table2 (
id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
name varchar(30),
store_id int
)
ENGINE=INNODB
PARTITION BY KEY() 
PARTITIONS 4;

4.List(预定义列表)

 按照某个字段有哪些值分在一个分区内

CREATE TABLE employees (
id INT NOT NULL,
fname VARCHAR(30),
lname VARCHAR(30),
hired DATE NOT NULL DEFAULT '1970-01-01',
separated DATE NOT NULL DEFAULT '9999-12-31',
job_code INT,
store_id INT
)
PARTITION BY LIST(store_id) (
PARTITION pNorth VALUES IN (3,5,6,9,17),
PARTITION pEast VALUES IN (1,2,10,11,19,20),
PARTITION pWest VALUES IN (4,12,13,14,18),
PARTITION pCentral VALUES IN (7,8,15,16)
);

5.Composite(复合模式)

 

posted @ 2017-12-17 12:04  ~沐风  阅读(239)  评论(0编辑  收藏  举报