时间:2021-07-01 10:21:17 帮助过:8人阅读
存储过程实例:
CREATE PROCEDURE backUpSms()
BEGIN
DECLARE tname varchar(64);
set @tname = CONCAT('sms_accpet',DATE_FORMAT(NOW(),'%Y%m'));
set @rname = CONCAT('create table ',@tname,' select * from sms_accpet');
PREPARE create_table from @rname;
EXECUTE create_table;
delete from sms_accpet;CREATE EVENT EVENT_SMS 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 CALL backUpSms();
存储过程:
http://blog.csdn.net/youngqj/article/details/6936632
http://blog.csdn.net/sun886/article/details/7992935
定时器:
http://www.cnblogs.com/gaizai/archive/2012/12/24/2831315.html
http://lobert.iteye.com/blog/1953827
1.复制表结构及数据到新表 CREATE TABLE 新表 SELECT * FROM 旧表 2.只复制表结构到新表 CREATE TABLE 新表 SELECT * FROM 旧表 WHERE 1=2 即:让WHERE条件不成立. 方法二:(低版本的mysql不支持,mysql4.0.25 不支持,mysql5已经支持了) CREATE TABLE 新表 LIKE 旧表 3.复制旧表的数据到新表(假设两个表结构一样) INSERT INTO 新表 SELECT * FROM 旧表 4.复制旧表的数据到新表(假设两个表结构不一样) INSERT INTO 新表(字段1,字段2,…….) SELECT 字段1,字段2,…… FROM 旧表
每天凌晨三点执行
create event event_call_defer
on schedule every 1 day starts date_add(date(curdate() + 1),interval 3 hour)
on completion preserve enable
do
begin
call test.warn();
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