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我想将下面的工作查询转换为LINQ VB.NET,但是,我没有得到结果。VB.NET SQL Server查询到LINQ
select
s.id, s.LastName, COUNT(c.Id)
from
Students s, Courses c
where
s.Id = c.Student_Id
group by
s.Id, s.LastName
我迄今达成:
Dim query = (From s In db.Students
Join c In db.Courses On s.Id Equals c.Student_Id
Group s, c By s.Id, s.LastName, c.Grade Into Group
Select New With {.Id = Id, .Name = LastName, .Counter = Group.Count
}).ToList
的结果是不正确的。你能帮我么?
完美,谢谢!我错误地在LINQ中添加了c.Grade – expert