sql连接查询到linq语法

我如何将其更改为linq to sql？

select * from ratesSchedule as rs
    inner join userdetails as ud on rs.sid = ud.sid
    and rs.tabletype = 'd'

我到目前为止

var results = from rs in db.ratesSchedule
              join ud in db.userdetails on rs.sid equals ud.sid

但我无法弄清楚如何添加"和rs.tabletype ='d'"

如果你想在没有where子句的情况下这样做,试试这个:

var results = from rs in db.ratesSchedule
              join ud in db.userdetails on 
                  new { rs.sid, rs.tabletype } equals 
                  new { ud.sid, tabletype = "d" }

我个人在这种情况下坚持使用SQL,因为LINQ甚至不容易阅读.;)