我可以在Linq中完成這個SQL查詢嗎？

Question

我有一個列表，我想根據myID值從該列表中獲取兩組行。但是，我不想在「myOtherField」中獲取具有相同值的兩個項目。這在SQL中很容易。我可以在Linq做到這一點嗎？

select * from myTable where myID = 25 

union 

select * from myTable where myID = 35 
and myOtherField not in (select myOtherField from myTable where myID = 25) 

Answer 1

http://msdn.microsoft.com/en-us/library/bb386993.aspx

How would you do a "not in" query with LINQ?

var query = 
(from obj in MyTable 
select obj) 
.Union 
    (from obj in Mytable 
where obj.myid = 35 && !(from obj.myotherfield in mytable 
     select obj)  
     .Contains(obj => obj.myid=25)  
    select obj) 

;