Sql Linq自连接复合密钥

请有人帮我做这个

我有一张桌子需要自己连接起来。该表包含一个复合键。到目前为止，下面的SQL语句工作正常

select * from releases as a inner join
(
select * from releases as r1
where id=50
) as x 
on (a.ParentSeriesId = x.SeriesId and a.ParentPeriod = x.Period) OR a.id=50

问题是如何将其转换为linq

到目前为止，我得出的结论是

from a in Releases
join x in (
         (from r1 in Releases
         where
         r1.Id == 50
         select new {
         r1
         }))
         on new { a.ParentSeriesId, a.ParentPeriod, a.Id }
  equals new { ParentSeriesId = x.r1.SeriesId, ParentPeriod = x.r1.Period, Id = 50 }
select new{

}

但这将生成以下SQL语句

SELECT NULL AS [EMPTY]
FROM [Releases] AS [t0]
INNER JOIN [Releases] AS [t1] ON ([t0].[ParentSeriesId] = [t1].[SeriesId]) AND ([t0].[ParentPeriod] = [t1].[Period]) AND ([t0].[Id] = @p0)
WHERE [t1].[Id] = @p1

---

问题是如何将其作为原始SQL语句。谢谢

Linq只支持Equijoin，因为您有一个OR语句，可以使用两个“from”子句来尝试以下操作

var xQuery = from r in Releases
             where r.Id == 50
             select r;

var query = from r in Releases
            from x in xQuery
            where (r.ParentSeriesId == x.SeriesId && r.ParentPeriod == x.Period) ||
                   r.Id == 50  //r.Id == x.Id
            select new
            {

            }

---

在linq查询中，您的连接条件不太正确，它将在条件之间产生“AND”的效果。我的评论不是对这个问题的回答，只是一个建议谢谢你。我会试试的，但我想这是唯一的办法。我会带着任何结果回来的。