摘要： use master go IF DB_ID('Myschool') IS NOT NULL drop database Myschoolgo create database Myschoolon(name=Myschool_dat,filename='D:\\Mydate\Myschool_dat 阅读全文

摘要： 判断数据库是否存在if exists (select * from sys.databases where name = '数据库名')drop database [数据库名]判断表是否存在if exists (select * from sysobjects where id = object_i 阅读全文