请问 if exists (select 1 from sysobjects where id = object_id('dbo.sys_Applications') and type = 'U') 这句SQL是什么意思?
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请问 if exists (select 1 from sysobjects where id = object_id('dbo.sys_Applications') and type = 'U') 这句SQL是什么意思?
请问 if exists (select 1 from sysobjects where&n