mysql批量增加表中新列存储过程

一般访问量比较大的网站,请求日志表都是每天一张表独立创建. 业务需要为每张表都添加一个新列,纠结了半天,写了个存储过程如下:

日志表结构类型 tbl_ads_req_20140801,  tbl_ads_req_20140802 ...

DELIMITER //create procedure sp2()begindeclare sTime varchar(32);declare eTime varchar(32);declare sName varchar(128);declare lName varchar(128);declare sqlVar varchar(128);declare rest int;set sTime = '20140801';set eTime = '20140831';set sName = CONCAT('tbl_ads_req_','');set lName = '';set rest = 1;while rest > 0 do   set sTime = (select DATE_FORMAT((select ADDDATE(sTime,1)),'%Y%m%d')); set lName = CONCAT(sName,sTime); set sqlVar=CONCAT(' alter table ',lName,' add app_package varchar(64)'); set @v_s=sqlVar; prepare stmt from @v_s; EXECUTE stmt; set rest = DATEDIFF(eTime,sTime);END while;end;// DELIMITER;

涉及到一些mysql函数需要自己查哦！