使用groupBy子查詢將SQL轉換為LINQ查詢

Question

請問有人可以幫助我將以下SQL的例子放到C＃中的LINQ查詢中，我使用的是.NET 4.0。

       SELECT x.*
          FROM [eBookAddict].[dbo].[UrlRecord] x
          JOIN (SELECT t.Slug
                  FROM [eBookAddict].[dbo].[UrlRecord] t
              GROUP BY t.Slug
                HAVING COUNT(t.Slug) = 2) y ON y.Slug = x.Slug

非常感謝，

保羅

Answer 1

from x in db.UrlRecord

join y in db.UrlRecord.GroupBy(rec => rec.Slug).Where(grp => grp.Count == 2)
on y.Key equals x.Slug

select x;