--*****************************************************************************
-- @作    者:  qwu;
-- @用    途:  删除数据库所有用户表;
-- @版    本:  v1.0
-- @创建日期:  2011-3-23;
-- @用    法:  设置use [数据库名],
-- @注    意:  !!!!!!!!慎用!!!!!!!!!;
-- @修改历史:  
--   2011-3-23 qwu 创建;
--*****************************************************************************
--!!!!!!!!!!!!!!!!!!!!!
--!!!!!!!!慎用!!!!!!!!!
--!!!!!!!!!!!!!!!!!!!!!
--BEGIN--
BEGIN TRAN
use [数据库名]
--删除外键约束
DECLARE c1 cursor for 
select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; '
from sysobjects 
where xtype = 'F'
open c1
declare @c1 varchar(8000)
fetch next from c1 into @c1
while(@@fetch_status=0)
begin 
exec(@c1)
fetch next from c1 into @c1
end
close c1
deallocate c1 
--删除所有用户表
declare @sql varchar(8000)
while (select count(*) from sysobjects where type='U')>0
begin
SELECT @sql='drop table ' + name
FROM sysobjects
WHERE (type = 'U')
ORDER BY 'drop table ' + name
exec(@sql) 
end
ROLLBACK
--END--