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1、常用的系统存储过程
1 exec sp_datebases --列出当前系统中的数据库
1 exec sp_renamedb 'studb','studb1' --修改数据库名称
use stuDB exec sp_tables --返回当前环境下可查询的对象的列表
exec columns stuInfo --返回表stuInfo 列的信息
exec sp_help stuInfo --返回表stuInfo 的所有信息
1 exec sp_helpconstraint stuInfo --查看表stuInfo的约束
exec sp_helpindex stuInfo 列出表索引
EXEC sp_helptext 'view_stuInfo_stuMarks' --查看显示默认值、未加密的存储过程、用户定义的存储过程、触发器或视图的实际文本
exec sp_stored_procedures --查看当前数据库的存储过程
--创建数据库bankDB,要求保存在D:ank USE master GO EXEC xp_cmdshell 'mkdir d:ank', NO_OUTPUT IF EXISTS(SELECT * FROM sysdatabases WHERE name='bankDB') DROP DATABASE bankDB GO CREATE DATABASE bankDB ( … ) GO EXEC xp_cmdshell 'dir D:ank' --查看文件
2.--.使用系统存储过程.查看用户表的约束、索引信息,并在D:project下创建子文件夹test
1 use bbsDB 2 go 3 --启用xp_cmdshell命令 4 exec sp_configure 'show advanced options',1;reconfigure;exec sp_configure 'xp_cmdshell',1'reconfigure;
1 exec sp_helpconstraint bbsuser
exec sp_helpindex bbsuser
3.
--2、创建带参存储过程.请编写存储过程proc_find1,实现查找某个用户(假定为可卡因)的发贴情况,界面如下所示(上半部分为发表主贴的情况,下面为发表回贴的情况):
--2、创建带参存储过程.请编写存储过程proc_find1,实现查找某个用户(假定为可卡因)的发贴情况,界面如下所示(上半部分为发表主贴的情况,下面为发表回贴的情况): drop proc proc_find1 create procedure proc_find1 @Uname varchar(15) as print '该用户发帖情况:' select Ttime,TclickCount,Ttopic,Tcontents from bbsTopic inner join bbsUsers on bbsUsers.UID = bbsTopic.TuID where Uname=@Uname print '-------------------' print '该用户回帖情况:' select Rtime,RclickCount,Rcontents from bbsReply inner join bbsUsers on bbsUsers.UID = bbsReply.RuID where Uname= @Uname go EXEC proc_find1 @Uname='可卡因'
--3、带输出参数的存储过程.编写存储过程proc_find2,查找某个用户的发贴情况,并返回发贴数和回贴数,界面如下所示(上半部分为发表主贴的情况,下面为发表回贴的情况): drop proc proc_find2 create procedure proc_find2 @num int output, @Uname varchar(15) as print '该用户发帖情况:' select Ttime,TclickCount,Ttopic,Tcontents from bbsTopic inner join bbsUsers on bbsUsers.UID = bbsTopic.TuID where Uname=@Uname print '-------------------' print '该用户回帖情况:' select Rtime,RclickCount,Rcontents from bbsReply inner join bbsUsers on bbsUsers.UID = bbsReply.RuID where Uname= @Uname select @num= count(Ttopic)+count(Rcontents) from bbsTopic inner join bbsReply on bbsReply.RuID= bbsTopic.TuID where bbsReply.RuID=(select UID from bbsUsers where Uname=@Uname) and bbsTopic.TuID=(select UID from bbsUsers where Uname=@Uname) go --调用存储过程 declare @sum int EXEC proc_find2 @sum output,'可卡因' print '小弟发帖和回帖较多,看来比较关心民众疾苦' print '总贴数:'+convert(varchar(5),@sum) go
--4.带默认参数的存储过程.要求创建存储过程proc_find3,查询某个用户在某个版块的发贴情况(主贴+回贴),并返回发贴主数和从贴数。如果调用者没指定具体的版块,则默认为所有版块,界面如下所示(上半部分为“.NET方向”发表主贴的情况,下面为“.NET方向”发表回贴的情况): create procedure proc_find3 @sum int output, --此参数只用于将信息从存储过程传输回应用程序。 @Uname varchar(15), @section varchar(32)='.NET' as print @Uname+'该用户'+@section+'版块发帖情况:' select Ttime,TclickCount,Ttopic,Tcontents from bbsTopic inner join bbsUsers on bbsUsers.UID = bbsTopic.TuID where Uname=@Uname and bbsTopic.TsID=(select SID from bbsSection where Sname= @section) print @Uname+'该用户'+@section+'版块回帖情况:' select Rtime,RclickCount,Rcontents from bbsReply inner join bbsUsers on bbsUsers.UID = bbsReply.RuID where Uname=@Uname and bbsReply.RsID=(select SID from bbsSection where Sname= @section) select @sum= count(TuID)+count(RuID) from bbsTopic inner join bbsReply on bbsReply.RuID= bbsTopic.TuID where (bbsReply.RuID=(select UID from bbsUsers where Uname=@Uname)and bbsReply.RsID=(select SID from bbsSection where Sname=@section)) and (bbsTopic.TuID=(select UID from bbsUsers where Uname=@Uname)and bbsTopic.TsID =(select SID from bbsSection where Sname=@section)) go --调用带参数默认值的存储过程 declare @sum int EXEC proc_find3 @sum output,'可卡因' print '小弟发帖和回帖较多,看来比较关心民众疾苦' print '总贴数:'+str(@sum) go drop proc proc_find3 --5、带默认参数的存储过程.编写存储过程proc_findReply,查询某个主贴的所有回贴,并返回回贴的数量,界面如下所示: create proc proc_findReply @total int output , @TID int=6, @RSID int=2 as select RID, RtID, RsID, RuID, Rface, Rcontents, Rtime, RclickCount from bbsReply inner join bbsTopic on bbsTopic.TsID =bbsReply.RsID where @RSID=RSID and @TID=TID select @total=count(RsID) from bbsReply where @RSID=RSID go declare @totalsum int exec proc_findReply @totalsum output print '总贴数为'+str(@totalsum) drop proc proc_findReply
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