将列转换为单元格字符串Power Query [英] Convert column to cell string Power Query

问题描述

我需要将Power Query中一列的所有值放入一个用逗号分隔的1单元格字符串中，如下例所示:

I need to fit all the values of a column in Power Query into a 1-cell string separated by commas, as the example below:

为此，我需要以下代码:

To do this, I have the following piece of code:

let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Transposed Table" = Table.Transpose(Source),
    #"Merged Columns" = Table.CombineColumns(#"Transposed Table",{"Column1", "Column2", "Column3"},Combiner.CombineTextByDelimiter(",", QuoteStyle.None),"Merged"),
    #"KeepString" = #"Merged Columns"[Merged]{0}
in
    #"KeepString"

此代码的问题在于，它假定总会有3列，但情况并非总是如此.如何将所有列(无论有多少列)合并为一个?

The problem with this code is that it assumes there will always be 3 columns, which is not always the case. How can I merge all columns (regardless of how many there are) into one?

推荐答案

您可以使用 List.Accumulate :

let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    KeepString = List.Accumulate(Source[User], "", (state, current) => if state = "" then current else state & "," & current)
in
    KeepString

您还可以使用 Table.ColumnNames 获取所有列名称的列表.您可以将其传递到 Table.CombineColumns 中，因此修改后的解决方案将是:

You can also use Table.ColumnNames to get the list of all the column names. You can pass this into Table.CombineColumns, so your modified solution would be:

let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Transposed Table" = Table.Transpose(Source),
    #"Merged Columns" = Table.CombineColumns(#"Transposed Table", Table.ColumnNames(#"Transposed Table"),Combiner.CombineTextByDelimiter(",", QuoteStyle.None),"Merged"),
    #"KeepString" = #"Merged Columns"[Merged]{0}
in
    #"KeepString"

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