如果存在这个表,则删除这个表的各种sql写法
mysql:
1 | drop table if exists address_book |
sql2005:
1 2 | IF EXISTS ( SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N '[dbo].[表名]' ) AND type in (N 'U' )) DROP TABLE [dbo].[表名] |
sql2000:
1 | IF EXISTS ( SELECT * FROM sysobjects WHERE object_id = OBJECT_ID(N '[dbo].[表名]' ) AND type in (N 'U' )) DROP TABLE [dbo].[表名] |
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