Question

我正在尝试在SQL SERVER中的union all之后对表进行排序

我已经阅读了几个地方（例如：How to use order by with union all in sql?），我需要写一下：

SELECT  * 
FROM 
        (
            SELECT * FROM TABLE_A 
            UNION ALL 
            SELECT * FROM TABLE_B
        ) dum
-- ORDER BY .....

但是，我一直收到错误说：

Column 'dum.var' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

虽然我没有任何GROUP BY查询...

有人可以向我解释一下吗？

Answer 1

感谢上面评论中的Tyron78，我发现了这个错误。

实际查询是：

SELECT * 
FROM
(
SELECT
        *
FROM
#TABLE1
UNION ALL
SELECT
        *
FROM
#TABLE2
) AS Z
ORDER BY sum([Units]) DESC, [Distance], [ID], [Product]

问题在于sum（），因为我之前已经在table1和table2中进行了总结。所以好的查询如下：

SELECT * 
FROM
(
SELECT
        *
FROM
#TABLE1
UNION ALL
SELECT
        *
FROM
#TABLE2
) AS Z
ORDER BY [Units] DESC, [Distance], [ID], [Product]

全部谢谢！

Answer 2

您需要提供要对结果集进行排序的列名。

SELECT  * 
FROM 
    (
        SELECT * FROM TABLE_A 
        UNION ALL 
        SELECT * FROM TABLE_B
    ) dum
order by <column_name> [asc|desc]

两个表中必须相同。

Answer 3

// B2CPopup.js
import $ from 'jquery'

export default class B2CPopup {
  constructor ({ _id, options }, html) {
    this._id = _id
    this.options = options
    this.html = html
  }

  start = () => {}
  createOptions = () => {}
  prependHTMLToDOM = () => $(this.html).prependTo('body')

  show = () => {}
}

SELECT UNION ALL ORDER BY查询中的GROUP BY子句错误

3 个答案: