/*
--下面的调下将清空数据库
exec TruncateDatabase 'truncate %tablename%'
*/

alter proc dbo.TruncateDatabase
@SqlExecute varchar(3000)='Select * from  %tablename%'
as
begin
 declare @tablename varchar(100)
   ,@sql varchar(3000)
 
 --定义游标
 declare mycur cursor  for
 select name from dbo.sysobjects where xtype='u'
 --打开
 open mycur
 fetch next from mycur into @tablename
 while @@fetch_status=0
 begin
  set @sql=Replace(@sqlExecute,'%tablename%',@tablename)
 
  --执行操作  
  print @sql
  Execute(@sql)
  --到下一个表
  fetch next from mycur into @tablename
 end
 close mycur
 deallocate mycur

end
go