两个数据库中的表进行内连

 

select
dbStudent.dbo.tbStudent.id,
dbStudent.dbo.tbStudent.name,
dbClass.dbo.tbClass.name
from dbStudent.dbo.tbStudent
inner join dbClass.dbo.tbClass
on dbStudent.dbo.tbStudent.classId=dbClass.dbo.tbClass.id
where dbClass.dbo.tbClass.id=1

表名前一定要加dbo