我需要Linq查詢這個SQL查詢

Question

"select count(salary) from employee where employeeID = 10 group by salary" --- Its a SQL Query. 

我需要Linq查詢這將檢索我相同的輸出..？

請幫我我是新來的LINQ

Answer 1

您也應該檢查：

完全aricle：SQL to LINQ (Visual Representation)

from e in employee 
where e.employeeid=10 
group e by e.Salary 
       into grp 
       select new 
       { 
        Salary = grp.Key, 
        Count = grp.Count() 
       }; 

Answer 2

您所查詢的困惑我從功能的角度：你想計算一名員工的不同工資數量？

無論如何，我認爲這樣的事情會做也行（未經測試）

db.Employees.Where(e=>e.id == 10).Select(s=>s.salary).Distinct().Count()