如何将这个SQL转换为LINQ？

Question

如何将以下SQL转换为Linq？

select ReqUserID, count(DepartmentID) 
    from [ReqUsersDeptMat] 
    where DepartmentID IN (93060,2175) 
    group by ReqUserID 
    having count(*) = 2 

Answer 1

尝试这种方式

from item in ReqUsersDeptMat 
group item by item.ReqUserID into groupedItems 
let count = groupedItems.Count() 
where count =2 
select new { ReqUserID= groupedItems.Key, Num_Of_Departmentid = count };