[SQL-码农]跟USE [数据库]GO 说88

USE MASTER
GO
EXEC sp_serveroption ......
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EXEC MASTER.sys.sp_serveroption ......

use [Datebase]
GO
EXEC [PROCEDURE_] ......
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			↓
EXEC [Datebase].dbo.[PROCEDURE_] ......

use [Datebase]
GO
select * from [Table_]
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			↓
select * from [Datebase].dbo.[Table_]

多数据库查询

select * 
	from  [Datebase].dbo.[Table_] table_1
	join  [Group].dbo.[Table_] table_2 
	on table_1.id=table_2.id