Question

希望你能提供帮助。我在我的电源查询中有以下代码，它与连接的电源数据透视表一起工作得很好。一旦Source行返回“此表为空”，一切都会出错：

电源查询返回错误消息，表明源行后面的2行无法识别。
power pivot中的表格显示了上次查询的最后结果。

如果没有结果，我需要表格为空。

我该怎么做？

let

    UrlSource = Excel.CurrentWorkbook(){[Name="Table6"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(UrlSource,{{"Url", type text}}),
    Url = #"Changed Type"{0}[Url],

    UserInput = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Changed Sagsnummer Type" = Table.TransformColumnTypes(UserInput,{{"Sagsnummer", type text}}),
    Sagsnummer = #"Changed Sagsnummer Type"{0}[Sagsnummer],

    Source = OData.Feed(Url & "/FileContacts?$select=CustomLabel_Summary,Name/Name1&$expand=Name&$filter=File/FileNo eq '" & Sagsnummer & "'"),
    #"Expanded Name" = Table.ExpandRecordColumn(Source, "Name", {"Name1"}, {"Name.Name1"}),
    #"Renamed Columns" = Table.RenameColumns(#"Expanded Name",{{"CustomLabel_Summary", "Rolle"}, {"Name.Name1", "Kontakt"}})

in

    #"Renamed Columns"

Answer 1

添加最后一步，检查UrlSource和UserInput是否有一行输入。如果没有，默认为一些空表：

= if Table.RowCount(UrlSource) > 0 and Table.RowCount(UserInput) > 0 then #"Renamed Columns" else #table({"Rolle", "Kontakt"}, {})

总之，您的代码看起来像

let

    UrlSource = Excel.CurrentWorkbook(){[Name="Table6"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(UrlSource,{{"Url", type text}}),
    Url = #"Changed Type"{0}[Url],

    UserInput = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Changed Sagsnummer Type" = Table.TransformColumnTypes(UserInput,{{"Sagsnummer", type text}}),
    Sagsnummer = #"Changed Sagsnummer Type"{0}[Sagsnummer],

    Source = OData.Feed(Url & "/FileContacts?$select=CustomLabel_Summary,Name/Name1&$expand=Name&$filter=File/FileNo eq '" & Sagsnummer & "'"),
    #"Expanded Name" = Table.ExpandRecordColumn(Source, "Name", {"Name1"}, {"Name.Name1"}),
    #"Renamed Columns" = Table.RenameColumns(#"Expanded Name",{{"CustomLabel_Summary", "Rolle"}, {"Name.Name1", "Kontakt"}}),

    Custom1 = if Table.RowCount(UrlSource) > 0 and Table.RowCount(UserInput) > 0 then #"Renamed Columns" else #table({"Rolle", "Kontakt"}, {})
in

    Custom1

电力查询＆amp;电动枢轴 - 空表和清理枢轴

1 个答案: