.net - linq 等效 SQL 查询 "not in (select query)"

Question

我的sql代码如下:

select UserId,UserName 
from aspnet_Users 
where UserId not in (select UsersId from tbluser  where active='true')

等效的 linq 表达式是什么？

Answer 1

我第一次尝试在 C# 中使用 LiNQ

var result = from y in aspnet_Users
            where !(
                        from x in tblUser
                        where  x.active == "true"
                        select x.UsersID
                    ).Contains(y.UserId)
            select y;                
            -- OR // select new { y.UserId, y.UserName};

来源

• The NOT IN clause in LINQ to SQL