將SQL代碼轉換爲LINQ（內部連接查詢）

Question

有人能幫助我，請將此SQL代碼轉換爲LINQ。

SQL查詢

select distinct coursecode 
from UnitSet_Unit 
where UnitCode in ('FDFFSACA' ,'FDFFSCFSAA', 'FDFOPTHCP3A ') 
and CourseCode in (Select distinct coursecode 
        from Trainee_course 
        where TraineeID =10000088) 

凡UnitCode在IN clause來動態數組的形式。 和第二部分課程代碼也有變盤點

Answer 1

關閉我的頭頂，假設我們有以下輸入（和你是工作在C＃）：

var unitCodes = new List<string> { "FDFFSACA" ,"FDFFSCFSAA", "FDFOPTHCP3A" }; 
var traineeID = 10000088; 

這應該工作：

var result = (from us in db.UnitSet_Unit 
       where unitCodes.Contains(us.UnitCode) 
       && us.CourseCode == (from tc in db.Trainee_course 
            where tc.TraineeID == traineeID 
            select tc.CourseCode).Distinct().SingleOrDefault() 
       select us.CourseCode).Distinct();