电源查询；过滤以仅显示一个值组合

发布于 2025-02-12 04:36:36 字数 1118 浏览 0 评论 0原文

我正在尝试使用Excel Power查询将列的一个组合过滤为：

示例：

原始表：

Header1	Header2
a	b b
b	b
b b	c

期望的结果：

header1	header2 header2
a	b
b	c

可以是ab/ba的任何组合只要只有一个。

我包括了一个未完成查询的演示工作簿的链接。尝试多种方法使它起作用。

PQ组合转换帮助

任何人都可以借用他们的专业知识来帮助实现这一目标吗？

原文

I'm trying to use Excel Power Query to filter down to only one combination of columns:

Example:

Original Table:

Header1	Header2
A	B
B	A
B	C

Desired Result:

Header1	Header2
A	B
B	C

Could be any combination of AB/BA as long as there is only one.

I've included a link to a demo workbook with the unfinished query. I've been going crazy trying multiple methods to get this to work.

PQ Combination Transform Help

Can anyone lend their expertise to help get this working?

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眼前雾蒙蒙 2025-02-19 04:36:37

哪些确定最后两行要保留？我猜您是说Header1与Header2对，不考虑其余列？

通常，如果要创建唯一的对，基本上是复合主键 - 可以

使用table.group

在UI中选择组，然后选择Header1和> header2。现在，您有了一对不同的一对。

表格

，或者您可以使用

= Table.Distinct( Source, {"Header1", "Header2"} )

What determines which of the last 2 rows is kept? I'm guessing you mean the pairs of Header1 with header2, not considering the remaining columns?

Normally if you want to create unique pairs, basically a Composite Primary Key -- you can use

Table.Group

Choose group by in the UI, and select Header1 and Header2. Now you have a distinct set of the pair.

Table.Distinct

Or you can use

= Table.Distinct( Source, {"Header1", "Header2"} )

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何其悲哀 2025-02-19 04:36:36

请参阅算法中的代码中的注释

let
    Source = Excel.CurrentWorkbook(){[Name="Table7"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Header1", type text}, {"Header2", type text}}),

//add custom column with a concatenated **sorted** version of the original two columns
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each List.Sort({[Header1]} & {[Header2]})),

//Remove duplicates based on the concatenated column
    #"Removed Duplicates" = Table.Distinct(#"Added Custom", {"Custom"}),
    #"Removed Columns" = Table.RemoveColumns(#"Removed Duplicates",{"Custom"})
in
    #"Removed Columns"

。 png“ alt =”在此处输入图像说明”>

See comments in code for the algorithm

let
    Source = Excel.CurrentWorkbook(){[Name="Table7"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Header1", type text}, {"Header2", type text}}),

//add custom column with a concatenated **sorted** version of the original two columns
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each List.Sort({[Header1]} & {[Header2]})),

//Remove duplicates based on the concatenated column
    #"Removed Duplicates" = Table.Distinct(#"Added Custom", {"Custom"}),
    #"Removed Columns" = Table.RemoveColumns(#"Removed Duplicates",{"Custom"})
in
    #"Removed Columns"