在linq编写查询
it1352
帮助1人
问题说明
嗨 -
我想在linq中重写这个查询并且根本不知道。在我的应用程序中，我有强类型的视图模型，因此不知道是否使用了一些文章已经说明的一般类型。
这是sql：
Hi -
I'm looking to rewrite this query in linq and literally have no idea. In my application I have strongly typed view models so dont know if using annomous types as a few of the articles have stated.
Here is the sql :
select
o.ReplacementItemID,
o.ItemStatus,
o.Description,
i.ItemWarrantyID,
o.Id as OriginalItemId
from
(
select
id,
ItemStatus,
Description,
ItemWarrantyID,
ReplacementItemID
from item
where ItemStatus = 'obso'
)o
inner join Item i
on o.ReplacementItemID = i.Id
--where o.ReplacementItemID = 948032
我尝试过：
http://linq101.nilzorblog.com/linq101-lambda.php
What I have tried:
http://linq101.nilzorblog.com/linq101-lambda.php
正确答案
#1
var queryNestedGroups =
来自学生的学生
学生组学生。从newGroup2进入newGroup1
in
（来自newGroup1的学生
由student.LastName组学生）
group newGroup2 by newGroup1.Key;
var queryNestedGroups =
from student in students
group student by student.Year into newGroup1
from newGroup2 in
(from student in newGroup1
group student by student.LastName)
group newGroup2 by newGroup1.Key;
这篇好文章是转载于：学新通技术网
