[英]How to write a “Not In” SQL query in LINQ?
如何将以下SQL查询转换为可比较的LINQ查询?
select * from Dept
where Id not in (
Select Id
from Employee
where Salary > 100);
尝试这样的事情:
var result = from d in Dept
let expensiveEmployeeIds = (from e in Employee.Employees
where e.Salary > 100
select e.Id)
where !expensiveEmployeeIds.Contains(d.Id)
select d;
这个怎么样?
var lowPaidEmps = from d in db.Dept
join e in db.Employees on d.Id equals e.Id
where e.Salary <= 100
select d;
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.