运维工程师常用的Mysql语句——3.创建Mysql分区表以及分区索引

1. 创建分区表

DROP TABLE IF EXISTS `test`；
CREATE TABLE  test  (
   id int(10) unsigned NOT NULL AUTO_INCREMENT,
    time datetime NOT NULL COMMENT '业务时间',
  PRIMARY KEY ( id , time )
)  ENGINE=InnoDB AUTO_INCREMENT=12001 DEFAULT CHARSET=utf8
PARTITION BY RANGE (TO_DAYS(time))
(PARTITION part_201501 VALUES LESS THAN (TO_DAYS('2015-02-01'))ENGINE = InnoDB,
 PARTITION part_201502 VALUES LESS THAN (TO_DAYS('2015-03-01'))ENGINE = InnoDB,
 PARTITION part_201503 VALUES LESS THAN (TO_DAYS('2015-04-01'))ENGINE = InnoDB,
 PARTITION part_201504 VALUES LESS THAN (TO_DAYS('2015-05-01'))ENGINE = InnoDB,
 PARTITION part_201505 VALUES LESS THAN (TO_DAYS('2015-06-01'))ENGINE = InnoDB,
 PARTITION part_201506 VALUES LESS THAN (TO_DAYS('2015-07-01'))ENGINE = InnoDB) ;

2. 查询分区的数据

#查看属于part_201501分区的数据有多少条
SELECT * FROM test PARTITION (part_201501);

3. 查看test表的所有分区

SELECT
	partition_name part,
	partition_expression expr,
	partition_description descr,
	table_rows 
FROM
	information_schema.PARTITIONS 
WHERE
	TABLE_SCHEMA = SCHEMA ( ) 
	AND TABLE_NAME = 'test';

4. 建立索引

alter table test add index test_index (id) ;

1：test代表索引建立的表 test_index 代表索引名称 id代表索引绑定的列
2：show index from test 查看test表的索引

5. 查看Mysql建表语句

show create table test;