这句话是什么意思？if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[PerPer这句话是什么意思？if exists (select * from dbo.sysobject
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句话是什么意思？if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[PerPer
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