創建測試表
復制代碼 代碼如下:
CREATE TABLE t
(
v VARCHAR(100) NOT NULL
) ENGINE INNODB DEFAULT CHARSET=utf8;
創建定時器 調用的存儲過程
DELIMITER $$
DROP PROCEDURE IF EXISTS e_test $$
CREATE PROCEDURE e_test()
BEGIN
INSERT INTO t VALUES('1');
END $$
DELIMITER ;
要使定時起作用 MySQL的常量GLOBAL event_scheduler必須為on或者是1
-- 查看是否開啟定時器
SHOW VARIABLES LIKE '%sche%';
-- 開啟定時器 0：off 1：on
SET GLOBAL event_scheduler = 1;
-- 創建事件
--每隔一秒自動調用e_test()存儲過程
CREATE EVENT IF NOT EXISTS event_test
ON SCHEDULE EVERY 1 SECOND
ON COMPLETION PRESERVE
DO CALL e_test();
-- 開啟事件
ALTER EVENT event_test ON
COMPLETION PRESERVE ENABLE;
-- 關閉事件
ALTER EVENT event_test ON
COMPLETION PRESERVE DISABLE;
從現在開始每隔九天定時執行
CREATE EVENT EVENT1
ON SCHEDULE EVERY 9 DAY STARTS NOW()
ON COMPLETION PRESERVE ENABLE
DO
BEGIN
CALL TOTAL();
END
每個月的一號凌晨1 點執行
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
每個季度一號的凌晨2點執行
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號凌晨四點執行
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
MySQL的event在進行按月，季，年進行自動調用存儲過程時，為了測試可以把系統改為年的最後一天，如2010-12-31 23：59：55;
