存贮过程(SQL样版)
今天发个SQL存贮过程给大家认识
CREATEPROCEDURElogin_verify
(
@community_idint,--拿值
@usernamevarchar(20),
@passwordvarchar(40),
@resulttinyintoutput
)
AS
setnocountON
declare@service_deadline_datesmalldatetime,@community_setting_max_online_countint---定义一个变量为短日期格式
select@community_setting_max_online_count=community_setting_max_online_count,@service_deadline_date=service_deadline_datefromcommunity_infowherecommunity_id=@community_id--这里是求最大登录人数
ifdatediff(d,@service_deadline_date,getdate())>10--其实这个是限制用户的使用期,求当前日期与库中的记录日期如时大于10天,则返回@result=11
begin
set@result=11--超过使用期
return
end
if(selectcount(*)fromonline_userwhere=@community_setting_max_online_count">community_id=@community_id)>=@community_setting_max_online_count--根据库中的记录设定与当前人数比较
begin
set@result=10--超出在线人数限制--返回@result=10
return
end
declare@stamiaint,@last_update_stamia_datesmalldatetime,@level_idint--定义变量整型短日期型整型
declare@useridint,@user_roleint
select@userid=userid,@user_role=user_role,@stamia=stamia,@last_update_stamia_date=last_update_stamia_date,@level_id=level_idfromuser_infowhereusername=@usernameandpassword=@passwordandcommunity_id=@community_idanduser_type=0
--从用户信息表中,将一些信息写入到定义的三个变量中
if@useridisnotnull----如果@userid不变null值
begin--用户名和密码校验成功
set@result=1--检验成功
return
end
else
begin
set@result=0---登录失败
end
setnocountOFF
GO
我们给上面的过程取个名login_verify叫做
写成是ASP代码中调用安全认证的地方
'''事先已经定义好conn
Setcmd.ActiveConnection=conn
cmd.CommandText="login_verify"
cmd.CommandType=&H0004
@community_idint,--拿值
@usernamevarchar(20),
@passwordvarchar(40),
@resultint
cmd.Parameters.Appendcmd.CreateParameter("@community_id",3)
cmd.Parameters.Appendcmd.CreateParameter("@username",200)
