Linq Multi加入Where子句

Question

我正在尝试在Where子句中使用多连接。

SQL代码具有下列工作

SELECT... 
FROM clients as c 
JOIN members as m ON 
(
    c.Id = m.clientId AND 
    c.groupId = m.groupId AND 
    c.created < m.created 
) 

LINQ代码 - 我不知道在哪里要请 '去哪儿' 条款

from c in clients 
join m in members ON 
{ClientId = c.Id,GroupId = c.groupId} equals 
{ClientId = m.clientId, GroupId = m.groupId} 

**（c.created<米.created）缺失**

我在哪里把c.created Where Where条款

Answer 1

在LINQ中不能有非equals连接条件。您可以使用额外的WHERE子句获得等效的结果：

from c in clients 
join m in members on 
new {ClientId = c.Id,GroupId = c.groupId} 
equals new {ClientId = m.clientId, GroupId = m.groupId} 
where c.created < m.created