使用 Power Query 堆叠列

Question

我正在尝试在 Power BI 上堆叠如下所示的三列。我的示例数据集如下：

Processo	Finalidade 1	Finalidade 2	Finalidade 3
1	Maçã	Banana	Mamão
2	Banana
3	Mamão	Banana

但是，我希望它保持这样：

Processo	Finalidade
1	Maçã
2	Banana
3	Mamão
1	Banana
2
3	Banana
1	Mamão
2
3

我尝试转置列，但我做不到这个结果。

Answer 1

根据您输入的数据和评论中的提示，我这样做了

let
    Source = Excel.CurrentWorkbook(){[Name="tblData"]}[Content],
    Step1 = Table.TransformColumnTypes(Source,{{"Processo", Int64.Type}, {"Finalidade 1", type text}, {"Finalidade 2", type text}, {"Finalidade 3", type text}}),
    tblUnPivot = Table.ReplaceValue(Step1,null,"",Replacer.ReplaceValue,{"Finalidade 2"}),
    replaceValues = Table.ReplaceValue(tblUnPivot,null,"",Replacer.ReplaceValue,{"Finalidade 3"}),
    unpivot = Table.UnpivotOtherColumns(replaceValues, {"Processo"}, "Attribut", "Wert"),
    sorted = Table.Sort(unpivot,{{"Attribut", Order.Ascending}, {"Processo", Order.Ascending}}),
    removeCol = Table.RemoveColumns(sorted,{"Attribut"}),
    renameCol = Table.RenameColumns(removeCol,{{"Wert", "Finalidade"}})
in
    renameCol

结果看起来像

但解决方案在很大程度上取决于列的命名 Finalidade 1 等

PS 另一个独立于列命名的解决方案可能看起来像这样

let
    Source = Excel.CurrentWorkbook(){[Name="tblData"]}[Content],
    Step1 = Table.TransformColumnTypes(Source,{{"Processo", Int64.Type}, {"Finalidade 1", type text}, {"Finalidade 2", type text}, {"Finalidade 3", type text}}),
    tblUnPivot = Table.ReplaceValue(Step1,null,"",Replacer.ReplaceValue,{"Finalidade 2"}),
    replaceValues = Table.ReplaceValue(tblUnPivot,null,"",Replacer.ReplaceValue,{"Finalidade 3"}),
    unpivot = Table.UnpivotOtherColumns(replaceValues, {"Processo"}, "Attribut", "Wert"),
    addColumn = Table.AddColumn(unpivot, "colPos", each List.PositionOf(Table.ColumnNames(Step1),[Attribut])),
    #"Neu angeordnete Spalten" = Table.ReorderColumns(addColumn,{"Processo", "colPos", "Attribut", "Wert"}),
    removeCol1 = Table.RemoveColumns(#"Neu angeordnete Spalten",{"Attribut"}),
    sortRows = Table.Sort(removeCol1,{{"colPos", Order.Ascending}, {"Processo", Order.Ascending}}),
    renameCol = Table.RenameColumns(sortRows,{{"Wert", "Fianlidade"}}),
    removeCol2 = Table.RemoveColumns(renameCol,{"colPos"})
in
    removeCol2

Answer 2

用一些字符替换空值。逆透视其他列。用 null 替换字符。删除多余的列

let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Replaced Value" = Table.ReplaceValue(Source,null,"~~~",Replacer.ReplaceValue,{"Finalidade 1", "Finalidade 2", "Finalidade 3"}),
#"Unpivoted Other Columns1" = Table.UnpivotOtherColumns(#"Replaced Value", {"Processo"}, "Attribute", "Value"),
#"Replaced Value1" = Table.ReplaceValue(#"Unpivoted Other Columns1","~~~",null,Replacer.ReplaceValue,{"Value"}),
#"Removed Columns" = Table.RemoveColumns(#"Replaced Value1",{"Attribute"})
in #"Removed Columns"

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