存贮过程(SQL样版)

今天发个SQL存贮过程给大家认识

复制代码 代码如下:

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)

cmd.Parameters.Appendcmd.CreateParameter("@password",200)

cmd("@community_id")=session("community_id")

cmd("@username")=request("userid")

cmd("@password")=request("userid")

cmd.execute

dimresult

result=cmd("@result")

conn.close

iftrim(result)="1"then

'''''''''''''登录成功的提示与操作

else

''''''''''''''''''''''登录失败的提示与操作

endif