Power Query 创建 PIVOT 但每个 Pivot 列都应该有它们的“子列”

Question

标题解释：我有一个 txt 文件，我将它读入 excel，创建一个 Query 来编辑它。我的 txt 文件是shop.txt，包含以下内容 (*1)：

Material nr	Shop	Trouser	Size	Trouser Color	Available amount	Gender
621077453	Target	XXL	Black	20	Male
621077453	Tesco	XXL	Black	12	Male
623989211	Target	S	Black	22	Male
630136378	Lidl	L	Black	21	Female
678048334	Target	M	Red	33	Female
678048334	Tesco	M	Red	15	Female
680603975	Target	S	White	30	Female
680603975	Tesco	S	White	20	Female
680603975	Lidl	S	White	33	Female
688820171	Target	XS	Blue	32	Male
688820171	Lidl	XS	Blue	15	Male

然后我从 range("A:F") 创建查询，删除空值，并创建一个自身的旋转版本：

let
    Source = Excel.CurrentWorkbook(){[Name="Table3"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Material nr.", Int64.Type}, {"Shop", type text}, {"Trouser Size", type text}, {"Trouser Color", type text}, {"Available amount", Int64.Type}, {"Gender", type text}}),
    #"Filtered Rows" = Table.SelectRows(#"Changed Type", each ([#"Material nr."] <> null)),
    #"Pivoted Column" = Table.Pivot(#"Filtered Rows", List.Distinct(#"Filtered Rows"[Shop]), "Shop", "Material nr.", List.Sum),
    #"Reordered Columns" = Table.ReorderColumns(#"Pivoted Column",{"Target", "Tesco", "Lidl", "Trouser Size", "Trouser Color", "Available amount", "Gender"})
in
    #"Reordered Columns"

它把我带到this
我需要尽可能多的可用不同商店的列。但要注意的是：我需要列出所有材料只有一次，并且每个额外的数据（大小、颜色...）都应该与枢轴的名称一起出现。手动命名它根本不是问题。如果我以我知道的唯一方式这样做，材料的附加数据就会被丢弃（所以我最终只剩下 |Material nr| 和 |Shop| 可以使用）。

我正在寻找的表格类似于this。

这甚至可以以某种方式实现吗？对我来说它看起来很乱。我几乎可以肯定可以在 VBS 中创建目标表，但我正在尝试使用 Power Query 做得更好。

先感谢您！

Answer 1

在 Powerquery 中尝试此代码。您取消旋转，合并两列，然后旋转回来。当其中有数据时，性别会显示为一列。

let  Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Unpivoted Other Columns" = Table.UnpivotOtherColumns(Source, {"Shop", "Material nr"}, "Attribute", "Value"),
#"Merged Columns" = Table.CombineColumns(#"Unpivoted Other Columns",{"Shop", "Attribute"},Combiner.CombineTextByDelimiter("-", QuoteStyle.None),"Header"),
#"Pivoted Column" = Table.Pivot(#"Merged Columns", List.Distinct(#"Merged Columns"[Header]), "Header", "Value")
in  #"Pivoted Column"

请注意，如果您愿意，也可以直接读入文本文件，而无需先将数据加载到 Excel 表格中

let Source = Table.FromColumns({Lines.FromBinary(File.Contents("C:Temp.txt"), null, null, 1252)}),
#"Split Column by Delimiter" = Table.SplitColumn(Source, "Column1", Splitter.SplitTextByDelimiter("___", QuoteStyle.Csv), {"Column1.1", "Column1.2", "Column1.3", "Column1.4", "Column1.5", "Column1.6", "Column1.7"}),
#"Promoted Headers" = Table.PromoteHeaders(#"Split Column by Delimiter", [PromoteAllScalars=true]),
#"Unpivoted Other Columns" = Table.UnpivotOtherColumns(#"Promoted Headers", {"Shop", "Material nr"}, "Attribute", "Value"),
#"Merged Columns" = Table.CombineColumns(#"Unpivoted Other Columns",{"Shop", "Attribute"},Combiner.CombineTextByDelimiter("-", QuoteStyle.None),"Header"),
#"Pivoted Column" = Table.Pivot(#"Merged Columns", List.Distinct(#"Merged Columns"[Header]), "Header", "Value")
in  #"Pivoted Column"