Sql server 基于列的MAX（）筛选联合结果

我有两个查询，它们的结果集通过一个并集组合在一起

我正在尝试根据第th filter列的

MAX（）

筛选出行，但我不知道如何执行此操作

+-----------------+----------+--------------+
| PropDescription | PropCode | FilterColumn |
+-----------------+----------+--------------+
| 476SADDR1       | Finland  |            2 |
| 477SADDR1       | Sweden   |            2 |
| 1SADDR1         | 2038     |            1 |
| 2SADDR1         | 2030     |            1 |
| 3SADDR1         | 15       |            1 |
| 4SADDR1         | 00000002 |            1 |
| 6SADDR1         | 500      |            1 |
| 8SADDR1         | 556      |            1 |
| 9SADDR1         | 821      |            1 |
+-----------------+----------+--------------+

SELECT
    PropDescription
    , PropCode
    , FilterColumn
FROM
    (SELECT DISTINCT
        CASE 
            WHEN PL.Type = 11
                THEN PL.ADDR
            ELSE P.ADDR
            END AS N'PropDescription'
        ,CASE 
            WHEN PL.TYPE = 3
                THEN P.CODE
            ELSE LPA.Value
            END AS N'PropCode'
        , 2 AS FilterColumn
    FROM PROPERTY PL
    INNER JOIN PROPLIST LP2 ON PL.ID = LP2.PropList
    INNER JOIN PROPERTY P ON LP2.Property = P.ID
    INNER JOIN PropAttribute LPA ON LPA.PropList = PL.ID
    WHERE 1 = 1
        AND PL.ID IN (SELECT Property from PROPLIST where PropList IN (47,46))
        AND P.TYPE = 3

    UNION ALL

    SELECT DISTINCT
        CASE 
            WHEN PL.Type = 11
                THEN PL.ADDR
            ELSE P.ADDR
            END AS N'PropDescription'
        ,CASE 
            WHEN PL.TYPE = 3
                THEN P.CODE
            ELSE LPA.Value
            END AS N'PropCode'
        , 1 AS FilterColumn
    FROM PROPERTY PL
    INNER JOIN PROPLIST LP2 ON PL.ID = LP2.PropList
    INNER JOIN PROPERTY P ON LP2.Property = P.ID
    LEFT JOIN PropAttribute LPA ON LPA.PropList = PL.ID
    WHERE 1 = 1
     AND PL.ID IN (SELECT Property from PROPLIST where PropList IN (1,2,3,4))
     AND PL.TYPE = 3
    ) AS ResultSet

我知道这很简单，但我现在无法理解

预期产出为：

+-----------------+----------+--------------+
| PropDescription | PropCode | FilterColumn |
+-----------------+----------+--------------+
| 476SADDR1       | Finland  |            2 |
| 477SADDR1       | Sweden   |            2 |
+-----------------+----------+--------------+

试试这个：

;with cte as
( --Your union),

 filtered as
(*, rank() over (order by filtercolumn desc) rank from cte)

select * from filtered
where rank = 1

---

那么，根据您提供的样本数据，您的预期输出是什么样的呢？嗯，从我所读到的内容来看，我缺少关于您希望过滤器如何在FilterColumn上工作的附加条件。。。。到目前为止，我已经理解了通过PropDescription从（您的子查询）组中选择PropDescription、PropCode、FilterColumn，PropCode的FilterColumn=MAX（FilterColumn）@shree.pat18使用预期输出更新了我的问题。@DimiToulakis使用预期输出更新了我的问题。是的，排名。。就这样！我知道我以前用过一些东西，但不记得是什么了。@RaduGheorghiu不用担心，我们都时不时地被这些东西难倒！