mysql 定时任务编写

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

-- 查看是否开启定时器

SHOW VARIABLES LIKE '%sche%'; <wbr></wbr>

-- 开启定时器 0：off 1：on

SET GLOBAL event_scheduler = 1; <wbr></wbr>

<wbr></wbr>

-- 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 <wbr><wbr></wbr></wbr>

DO CALL e_test();

<wbr></wbr>

-- 开启事件

ALTER EVENT event_test ON <wbr><span></span><wbr></wbr></wbr>

COMPLETION PRESERVE ENABLE; <wbr><wbr></wbr></wbr>

<wbr></wbr>

-- 关闭事件

ALTER EVENT event_test ON <wbr><span></span><wbr></wbr></wbr>

COMPLETION PRESERVE DISABLE;<wbr></wbr>

从现在开始每隔九天定时执行 <wbr></wbr>

CREATE <wbr>EVENT EVENT1 <wbr></wbr></wbr>

ON SCHEDULE EVERY 9 DAY STARTS NOW() <wbr></wbr>

ON COMPLETION PRESERVE ENABLE <wbr></wbr>

DO <wbr></wbr>

<wbr><span></span><wbr><span></span>BEGIN <wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span><wbr><span></span><wbr>CALL TOTAL(); <wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span>END <wbr></wbr></wbr></wbr>

<wbr><wbr></wbr></wbr>

<wbr><wbr></wbr></wbr>

每个月的一号凌晨1 点执行 <wbr></wbr>

CREATE <wbr>EVENT EVENT2 <wbr><span></span><wbr><wbr></wbr></wbr></wbr></wbr>

ON SCHEDULE EVERY 1 MONTH STARTS DATE_ADD(DATE_ADD(DATE_SUB(CURDATE(),INTERVAL DAY(CURDATE())-1 DAY), INTERVAL 1 MONTH),INTERVAL 1 HOUR) <wbr></wbr>

ON COMPLETION PRESERVE ENABLE <wbr></wbr>

DO <wbr></wbr>

<wbr><span></span><wbr><span></span>BEGIN <wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span><wbr><span></span><wbr><span></span>CALL STAT(); <wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span>END <wbr></wbr></wbr></wbr>

<wbr><wbr></wbr></wbr>

<wbr><wbr></wbr></wbr>

<wbr><wbr></wbr></wbr>

每个季度一号的凌晨2点执行<wbr></wbr>

CREATE <wbr>EVENT TOTAL_SEASON_EVENT <wbr></wbr></wbr>

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) <wbr></wbr>

ON COMPLETION PRESERVE ENABLE <wbr></wbr>

DO <wbr></wbr>

<wbr><span></span><wbr><span></span>BEGIN <wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span><wbr><span></span><wbr><span></span>CALL SEASON_STAT(); <wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span>END <wbr></wbr></wbr></wbr>

<wbr><wbr></wbr></wbr>

<wbr><wbr></wbr></wbr>

每年1月1号凌晨四点执行<wbr></wbr>

CREATE <wbr>EVENT TOTAL_YEAR_EVENT <wbr></wbr></wbr>

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

ON COMPLETION PRESERVE ENABLE <wbr></wbr>

DO <wbr></wbr>

<wbr><span></span><wbr><span></span>BEGIN <wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span><wbr><span></span><wbr><span></span>CALL YEAR_STAT(); <wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span>END <wbr></wbr></wbr></wbr>

<wbr><span></span><wbr><span></span><wbr><wbr></wbr></wbr></wbr></wbr>

MySQL的event在进行按月，季，年进行自动调用存储过程时，为了测试可以把系统改为年的最后一天，如2010-12-31 23：59：55;

这个Oracle的Job就会把月，季，年存储过程执行一遍。但MySQL改了系统时间了Event也没有定时执行。不知道各位大虾有没有什么好办法？可以解决这个问题。

我的一个做统计的存储过程：

begin
DECLARE l_sql VARCHAR(4000);
insert into app_total(name,login_times,user_times,total_day)
select app_name,
sum(1),
(select count(distinct imei,releaseos,sdk,model,app_name) from user_login_log l where l.app_name=t.app_name ) ,
date_format(date_add(now(),interval -1 day), '%Y-%m-%d')
from user_login_log t group by t.app_name;

SET l_sql=CONCAT(' ','create table user_login_log',date_format(date_add(now(),interval -1 day), '%Y%m%d'),' as select * from user_login_log');
SET @sql=l_sql;
PREPARE s1 FROM @sql;
EXECUTE s1;
DEALLOCATE PREPARE s1;
end