在 UNION 之后创建排名列

Question

我正在尝试根据第 SalesAmount 列中的金额创建一个 SalesRank 列。

我正在尝试做与此类似的事情：RANK() OVER(Order BY SalesAmount desc) as StateRank，但我不确定在将两个 table 连接在一起后如何执行此操作？如何在合并 table 后创建另一列？为此，我需要将联合 select 插入 #temptable?

这是我的例子 table:

StateId	ReportTitle	ReportId	SalesAmount
1	Online Sales in California	21	21512
12	Online Sales in New York	37	13201
14	Online Sales in Michigan	91	9212
23	Online Sales in Nevada	14	12931
8	Online Sales in Pennsylvania	14	23413
13	Online Sales in Oregon	14	9651

我期待 return 喜欢：

StateId	ReportTitle	ReportId	SalesAmount	SalesRank
1	Online Sales in California	21	21512	2
12	Online Sales in New York	37	13201	3
14	Online Sales in Michigan	91	9212	6
23	Online Sales in Nevada	14	12931	4
8	Online Sales in Pennsylvania	14	23413	1
13	Online Sales in Oregon	14	9651	5

这是我的查询：

CREATE TABLE TableOne
(
    StateId INT,
    ReportTitle VARCHAR(100),
    ReportId INT,
    SalesAmount Money, 
)

INSERT INTO TableOne (StateId,ReportTitle,ReportId,SalesAmount)
VALUES (1,'Online Sales in California',21, 21512),(12,'Online Sales in New York',37,13201), (14,'Online Sales in Michigan',91,9212)

CREATE TABLE TableTwo
(
    StateId INT,
    ReportTitle VARCHAR(100),
    ReportId INT,
    SalesAmount Money, 
)

INSERT INTO TableTwo (StateId,ReportTitle,ReportId,SalesAmount)
VALUES (23,'Online Sales in Nevada',14,12931), (8,'Online Sales in Pennsylvania',14,23413), (13,'Online Sales in Oregon',14,9651)

SELECT * FROM TableOne 
UNION ALL 
SELECT * FROM TableTwo

Answer 1

你快到了。

SELECT  *
        ,RANK() OVER (ORDER BY SalesAmount DESC) AS RowRank
FROM    (
            SELECT  *
            FROM    TableOne
            UNION ALL
            SELECT  *
            FROM    TableTwo
        ) AS t;

Answer 2

或者您可以使用 Common Table Expression（在这种情况下只是 neater/different 编写子查询的方式，但在其他情况下确实提供更多好处）。

WITH cte AS (
  SELECT *
  FROM TableOne
  UNION ALL
  SELECT *
  FROM TableTwo
)
SELECT *
     , RANK() OVER (ORDER BY SalesAmount DESC) AS RowRank
FROM cte;

在 UNION 之后创建排名列

Creating a rank column after UNION

sql

tsql

sql-server

sql-rank