人事管理信息系统 use master go if exists (select * from dbo.sysdatabases where name = 'DBManPower') drop database DBManPower GO create database DBManPower go use DBManPower go if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tbUser]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop ta