向复杂SQL查询添加联接

我有一个现有的SQL查询，需要向其中添加一个联接，这样，只有当另一个表中的列的值与联接指定的值相同时，才会返回此查询的结果。我以前做过连接，但它们总是基于更简单的查询。我只是不确定在哪里插入连接，我尝试过的每件事都有语法问题。我想用英语说：

现有查询…连接另一个表，其中ANOTHERTABLE.COLUMNNAME=“SOMEVALUE”

查询是：

    ; WITH cte_DateFormat AS (SELECT        ServerName, CONVERT(DATE, Date, 103) AS Date, [Capacity(GB)], [Free Space (GB)], Region
                                                           FROM            [Some_Table]), cte_Rank AS
    (SELECT        ROW_NUMBER() OVER (PARTITION BY ServerName, CAST(YEAR(Date) AS VARCHAR(4)) + CAST(MONTH(Date) AS VARCHAR(2))
      ORDER BY Date DESC) AS ID, Region, ServerName, Date, [Capacity (GB)], [Free Space (GB)]
FROM            cte_DateFormat)
    SELECT        Region, ServerName, Date, [Capacity (GB)], [Free Space (GB)]
     FROM            cte_Rank
     WHERE        ID = 1
     ORDER BY Date DESC, Region DESC

---

听起来好像你不想加入，你想要求在另一个表中存在一个值。因此，存在以下用途：

; WITH cte_DateFormat AS (...) , cte_Rank AS (...)
SELECT Region, ServerName, Date, [Capacity (GB)], [Free Space (GB)]
FROM cte_Rank
WHERE ID = 1
AND EXISTS
(
  select * 
  from anothertable 
  where anothertable.servername = cte_Rank.ServerName 
  and ... -- some other criteria if needed
)
ORDER BY Date DESC, Region DESC

---

您可以使用sqlfiddle来放置示例表吗？您想连接表的哪一列

cte_rank

？与列“ServerName”连接cte_DateFormat和cte_rank都是cte。您可以像加入表一样加入其中任何一个。请看这里：