mysql定时创建MERGE分表

-- 建分表

DROP TABLE IF EXISTS `alldata_20160328`;

CREATE TABLE `alldata_20160328`(

id INT(11) PRIMARY KEY AUTO_INCREMENT,

`name` VARCHAR(100),

address VARCHAR(100),

phone VARCHAR(20)

)CHARSET=utf8 ENGINE=MYISAM;

-- 建总表

DROP TABLE IF EXISTS `alldata`;

CREATE TABLE `alldata`(

id INT(11) PRIMARY KEY AUTO_INCREMENT,

`name` VARCHAR(100),

address VARCHAR(100),

phone VARCHAR(20)

)CHARSET=utf8 ENGINE=MERGE UNION(alldata_20160328) INSERT_METHOD=LAST;

-- 创建存储过程

DELIMITER $$

DROP PROCEDURE IF EXISTS createTable_pro $$

CREATE PROCEDURE createTable_pro()

BEGIN

DECLARE oldnames TEXT;

DECLARE newname VARCHAR(100);

DECLARE createtable VARCHAR(200);

DECLARE altertable TEXT;

SELECT GROUP_CONCAT(TABLE_NAME) INTO oldnames FROM INFORMATION_SCHEMA.TABLES WHERE table_name LIKE 'alldata_%';

SET newname = CONCAT('alldata_',DATE_FORMAT(NOW(),'%Y%m%d%H%i'));

SET oldnames = CONCAT(oldnames,',',newname);

SET createtable = CONCAT('CREATE TABLE ',newname,' LIKE alldata_20160328;');

SET altertable = CONCAT('ALTER TABLE alldata UNION=(',oldnames,')');

SET @sql = createtable;

PREPARE stmt FROM @sql;

EXECUTE stmt;

SET @sql = altertable;

PREPARE stmt FROM @sql;

EXECUTE stmt;

END$$

DELIMITER ;

-- 创建定时器 从现在开始每分钟执行一次

/*

-- 定时器默认关闭

SHOW VARIABLES LIKE '%sche%'; -- 查看定时器状态

SET GLOBAL event_scheduler = 1; -- 启动定时器

-- SET GLOBAL event_scheduler = 0; -- 停止定时器

*/

DROP EVENT IF EXISTS test_event;

CREATE EVENT IF NOT EXISTS test_event

ON SCHEDULE EVERY 1 MINUTE STARTS NOW()

ON COMPLETION PRESERVE

DO CALL createTable_pro;