mysql 创建存储过程

mysql 创建存储过程 

实例一：

CREATE PROCEDURE cp_test()
BEGIN

declare a int;
declare b int;

set a=1;
set b=2;

select a,b;


END

实例二：

 

CREATE PROCEDURE cp_Stat_VideoData()
BEGIN

declare yestday date;
set yestday=date(date_add(NOW(), interval -1 day));
if exists(select Id from Stat_VideoHits where AddDate = yestday)
THEN
delete from Stat_VideoHits where AddDate=yestday;
end if;

insert into Stat_VideoHits(Id,VideoId,Times,AddDate) select uuid(), VideoId,COUNT(1),AddDate from Coll_VideoHits 
where AddDate = yestday
group by VideoId;

DELETE from Sum_VideoHits;

insert into Sum_VideoHits(Id,VideoId,Times,UpdateDate) select uuid(),VideoId,sum(Times),now() from Stat_VideoHits 
group by VideoId;

delete from Coll_VideoHits WHERE AddDate<date_add(yestday, interval -3 day);


END