将列转换为单元格字符串 Power Query

Question

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

为此，我有以下代码：

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设总是有 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？

Answer 1

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

您也可以使用Table.ColumnNames 来获取所有列名的列表。您可以将其传递给 Table.CombineColumns，因此您修改后的解决方案将是：

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"

Answer 2

您也可以使用更短的代码，例如：

let
    Source=Excel.CurrentWorkbook( {[Name="Table1"]}[Content],
    Result = Text.Combine(Source[User], ",")
in
    Result

将列转换为单元格字符串 Power Query

Convert column to cell string Power Query

excel

powerquery