—— 查看event的create信息

SHOW CREATE event event_test;

——查看某个schema下的event状态

SELECT event_schema,event_name,STATUS FROMinformation_schema.events WHERE event_schema = 'xxxx'

——查看event功能是否开启

mysql> showvariables like '%event%';

+-----------------+-------+

|Variable_name | Value |

+-----------------+-------+

| event_scheduler |OFF |

+-----------------+-------+

1 row in set (0.00 sec)

开启event功能，可设置为ON|1

mysql> setglobal event_scheduler=on;

Query OK, 0 rowsaffected (0.00 sec)

mysql> showvariables like '%event%';

+-----------------+-------+

|Variable_name | Value |

+-----------------+-------+

| event_scheduler |ON |

+-----------------+-------+

1 row in set (0.00sec)

-- 创建测试表

CREATE TABLE t(XDATETIME);

--创建一个测试的proc,为了向测试表中插入系统时间

DELIMITER $$

DROP PROCEDURE IFEXISTS e_test $$

CREATE PROCEDUREe_test()

BEGIN

INSERT INTO tVALUES(NOW());

END $$

DELIMITER ;

-- 创建事件

--每隔十秒自动调用e_test()存储过程

CREATE EVENT IF NOTEXISTS event_test

ON SCHEDULE EVERY10 SECOND

ON COMPLETIONPRESERVE

DO CALL e_test();　　

过会儿select测试表中的数据，如下：

-- 开启事件

　　ALTER EVENT event_test ON

　　COMPLETION PRESERVE ENABLE;

-- 关闭事件

　　ALTER EVENT event_test ON

　　COMPLETION PRESERVE DISABLE;

一些例子：

从现在开始每隔九天定时执行

CREATE EVENT EVENT1

ON SCHEDULE EVERY 9DAY STARTS NOW()

ON COMPLETION PRESERVE ENABLE

DO

BEGIN

CALL TOTAL();

END

每个月的一号凌晨1 点执行

CREATE EVENT EVENT2ON SCHEDULE EVERY 1 MONTH STARTS

DATE_ADD(DATE_ADD(DATE_SUB(CURDATE(),INTERVALDAY(CURDATE())-1 DAY), INTERVAL 1 MONTH),INTERVAL 1 HOUR)

ON COMPLETION PRESERVE ENABLE

DO

BEGIN

CALL STAT();

END

每个季度一号的凌晨2点执行

CREATE EVENTTOTAL_SEASON_EVENT

ON SCHEDULE EVERY 1QUARTER STARTS DATE_ADD(DATE_ADD(DATE( CONCAT(YEAR(CURDATE()),'-',ELT(QUARTER(CURDATE()),1,4,7,10),'-',1)),INTERVAL1 QUARTER),INTERVAL 2 HOUR)

ON COMPLETION PRESERVE ENABLE

DO

BEGIN

CALL SEASON_STAT();

END

每年1月1号凌晨四点执行

CREATE EVENTTOTAL_YEAR_EVENT

ON SCHEDULE EVERY 1YEAR STARTS DATE_ADD(DATE(CONCAT(YEAR(CURDATE()) + 1,'-',1,'-',1)),INTERVAL 4HOUR)

ON COMPLETION PRESERVE ENABLE

DO

　BEGIN

　CALL YEAR_STAT();

　END