MySQL定时器开启、调用实现代码

创建测试表 

CREATE TABLE t 
( 
v VARCHAR(100) NOT NULL 
) ENGINE INNODB DEFAULT CHARSET=utf8; 

创建定时器 调用的存储过程 

DELIMITER $$ 
DROP PROCEDURE IF EXISTS e_test $$ 
CREATE PROCEDURE e_test() 
BEGIN 
INSERT INTO t VALUES('1'); 
END $$ 
DELIMITER ; 

要使定时起作用 MySQL的常量GLOBAL event_scheduler必须为on或者是1 

-- 查看是否开启定时器 
SHOW VARIABLES LIKE '%sche%'; 
-- 开启定时器 0：off 1：on 
SET GLOBAL event_scheduler = 1; 
-- 创建事件 
--每隔一秒自动调用e_test()存储过程 
CREATE EVENT IF NOT EXISTS event_test 
ON SCHEDULE EVERY 1 SECOND 
ON COMPLETION PRESERVE 
DO CALL e_test(); 
-- 开启事件 
ALTER EVENT event_test ON 
COMPLETION PRESERVE ENABLE; 
-- 关闭事件 
ALTER EVENT event_test ON 
COMPLETION PRESERVE DISABLE; 

从现在开始每隔九天定时执行 

CREATE EVENT EVENT1 
ON SCHEDULE EVERY 9 DAY 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 EVENT2 
ON SCHEDULE EVERY 1 MONTH STARTS DATE_ADD(DATE_ADD(DATE_SUB(CURDATE(),INTERVAL DAY(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 EVENT TOTAL_SEASON_EVENT 
ON SCHEDULE EVERY 1 QUARTER STARTS DATE_ADD(DATE_ADD(DATE( CONCAT(YEAR(CURDATE()),'-',ELT(QUARTER(CURDATE()),1,4,7,10),'-',1)),INTERVAL 1 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 EVENT TOTAL_YEAR_EVENT 
ON SCHEDULE EVERY 1 YEAR STARTS DATE_ADD(DATE(CONCAT(YEAR(CURDATE()) + 1,'-',1,'-',1)),INTERVAL 4 HOUR) 
ON COMPLETION PRESERVE ENABLE 
DO 
BEGIN 
CALL YEAR_STAT(); 
END