03 2020 档案

如果存在这个表,则删除这个表的sql
摘要：mysql： drop table if exists address_book sqlserver2005:IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[表名]') AND type in (N' 阅读全文
posted @ 2020-03-02 17:54 KJXY 阅读(1725) 评论(0) 推荐(0)