數據庫根據當前時間分區

-- 建立數據表
CREATE TABLE `tb_user_bhavior_log` (
`ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`USER_ID` int(10) DEFAULT NULL,
`SESSION_ID` varchar(128) DEFAULT NULL,
`CREATE_TIME` datetime DEFAULT NULL,
`USER_AGENT` varchar(256) DEFAULT NULL,
`EVENT_ID` int(4) DEFAULT NULL,
PRIMARY KEY (`ID`,`CREATE_TIME`),
KEY `idx_createtime` (`CREATE_TIME`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
PARTITION BY RANGE(TO_DAYS (CREATE_TIME))
(
PARTITION p20160501 VALUES LESS THAN (TO_DAYS('2016-05-01'))
);

-- 存儲過程
/* 程序功能：循環使用分區，每1個月一個分區 */
drop procedure if exists Set_Partition;
create procedure Set_Partition()
begin
set @Max_date = date_add(curdate() - day(curdate()) + 1, interval 1 month)+0;

SELECT @Max_date;

/* 修改表，在最大分區的後面增長一個分區，時間範圍加半個月 */
SET @s1=concat('ALTER TABLE tb_user_bhavior_log ADD PARTITION (PARTITION p',@Max_date,' VALUES LESS THAN (TO_DAYS (''',date(@Max_date),''')))');
PREPARE stmt2 FROM @s1;
EXECUTE stmt2;
DEALLOCATE PREPARE stmt2;
end

 -- 任務

CREATE EVENT e_Set_Partition
ON SCHEDULE
EVERY 1 MONTH STARTS '2016-05-28 23:59:58'
DO
call Set_Partition();