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powerquery - 扩展表时 Power Query 缺失值

问题描述

我有一个问题：当我尝试从许多文件中扩展表时，我丢失了一些值。

到目前为止，我发现问题是在查询遇到空表时开始的。

我试图过滤掉空表，但问题仍然存在。

知道什么是问题以及如何解决吗？

在此处输入图像描述

询问：

let
    Source = Folder.Files("X:\Operations\tutaj\SLA MIAD"),
    #"Lowercased Text" = Table.TransformColumns(Source,{{"Extension", Text.Lower, type text}}),
    #"Filtered Rows" = Table.SelectRows(#"Lowercased Text", each Text.Contains([Extension], "xlsx")),
    #"Filtered Rows1" = Table.SelectRows(#"Filtered Rows", each Text.Contains([Name], "NCR") or Text.Contains([Name], "Printec") or Text.Contains([Name], "PTL")),
    #"Filtered Rows2" = Table.SelectRows(#"Filtered Rows1", each Text.Contains([Name], "2018")),
    #"Removed Other Columns" = Table.SelectColumns(#"Filtered Rows2",{"Content"}),
    #"Added Custom" = Table.AddColumn(#"Removed Other Columns", "Custom", each Excel.Workbook([Content])),
    #"Expanded Custom" = Table.ExpandTableColumn(#"Added Custom", "Custom", {"Name", "Data", "Item", "Kind", "Hidden"}, {"Name", "Data", "Item", "Kind", "Hidden"}),
    #"Filtered Rows3" = Table.SelectRows(#"Expanded Custom", each ([Kind] = "Sheet")),
    #"Filtered Rows4" = Table.SelectRows(#"Filtered Rows3", each Text.Contains([Name], "SLA report")),
    #"Removed Columns" = Table.RemoveColumns(#"Filtered Rows4",{"Name", "Item", "Kind", "Hidden"}),
    #"Removed Errors" = Table.RemoveRowsWithErrors(#"Removed Columns", {"Content"}),
    #"Invoked Custom Function" = Table.AddColumn(#"Removed Errors", "TestFunction", each FileQuery([Data])),
    #"Added Custom1" = Table.AddColumn(#"Invoked Custom Function", "Custom", each Table.IsEmpty([TestFunction])),
    #"Filtered Rows6" = Table.SelectRows(#"Added Custom1", each ([Custom] = false)),
    #"Expanded TestFunction" = Table.ExpandTableColumn(#"Filtered Rows6", "TestFunction", {"Order ID", "ATM", "City", "Country", "CIT/Vault", "Service", "SLACategory", "Condition", "Serv Acc Mon", "Serv Acc Sat", "Serv Acc Sun", "Status", "Reason", "Description", "Created(CET)", "SLA Target Date(CET)", "Closed(CET)", "Age", "Contractual Reaction Time", "Overdue By absolute", "Overdue By Srv.Hrs", "On Time", "Charged call", "Reference ID", "Reference priority", "Comments", "SLA Category"}, {"Order ID", "ATM", "City", "Country", "CIT/Vault", "Service", "SLACategory", "Condition", "Serv Acc Mon", "Serv Acc Sat", "Serv Acc Sun", "Status", "Reason", "Description", "Created(CET)", "SLA Target Date(CET)", "Closed(CET)", "Age", "Contractual Reaction Time", "Overdue By absolute", "Overdue By Srv.Hrs", "On Time", "Charged call", "Reference ID", "Reference priority", "Comments", "SLA Category"}),
    #"Removed Other Columns1" = Table.SelectColumns(#"Expanded TestFunction",{"Order ID", "ATM", "City", "Country", "CIT/Vault", "Service", "Condition", "Reason", "Status", "Description", "Created(CET)", "SLA Target Date(CET)", "Closed(CET)", "Overdue By absolute", "Overdue By Srv.Hrs", "On Time"}),
    #"Changed Type" = Table.TransformColumnTypes(#"Removed Other Columns1",{{"Created(CET)", type datetime}, {"SLA Target Date(CET)", type datetime}, {"Closed(CET)", type datetime}}),
    #"Added Custom2" = Table.AddColumn(#"Changed Type", "Age", each [#"Closed(CET)"]-[#"Created(CET)"]),
    #"Changed Type1" = Table.TransformColumnTypes(#"Added Custom2",{{"Age", type duration}}),
    #"Filtered Rows5" = Table.SelectRows(#"Changed Type1", each [Order ID] <> null and [Order ID] <> "")
in
    #"Filtered Rows5"

标签： powerquerym

解决方案

我认为您的表中存在的标题（您想要扩展的）和您实际扩展的标题存在一些差异。

您已经展开SLACategory和Order ID（在屏幕截图的上半部分），但这些应该分别是SLA Category和OrderId（在屏幕截图的下半部分）。注意间距和大小写的差异。

当您指定List要扩展的标题时（在下面之间{）} ：

#"Expanded TestFunction" = Table.ExpandTableColumn(#"Filtered Rows6", "TestFunction", {"Order ID", "ATM", "City", "Country", "CIT/Vault", "Service", "SLACategory", "Condition", "Serv Acc Mon", "Serv Acc Sat", "Serv Acc Sun", "Status", "Reason", "Description", "Created(CET)", "SLA Target Date(CET)", "Closed(CET)", "Age", "Contractual Reaction Time", "Overdue By absolute", "Overdue By Srv.Hrs", "On Time", "Charged call", "Reference ID", "Reference priority", "Comments", "SLA Category"}, {"Order ID", "ATM", "City", "Country", "CIT/Vault", "Service", "SLACategory", "Condition", "Serv Acc Mon", "Serv Acc Sat", "Serv Acc Sun", "Status", "Reason", "Description", "Created(CET)", "SLA Target Date(CET)", "Closed(CET)", "Age", "Contractual Reaction Time", "Overdue By absolute", "Overdue By Srv.Hrs", "On Time", "Charged call", "Reference ID", "Reference priority", "Comments", "SLA Category"}),

我认为你需要

  • 完美地对标题本身进行硬编码（在区分大小写和空格方面）
  • 或动态扩展它们，而不是基于一些硬编码列表。

要动态扩展列，您必须执行类似替换此行的操作：

#"Expanded TestFunction" = Table.ExpandTableColumn(#"Filtered Rows6", "TestFunction", {"Order ID", "ATM", "City", "Country", "CIT/Vault", "Service", "SLACategory", "Condition", "Serv Acc Mon", "Serv Acc Sat", "Serv Acc Sun", "Status", "Reason", "Description", "Created(CET)", "SLA Target Date(CET)", "Closed(CET)", "Age", "Contractual Reaction Time", "Overdue By absolute", "Overdue By Srv.Hrs", "On Time", "Charged call", "Reference ID", "Reference priority", "Comments", "SLA Category"}, {"Order ID", "ATM", "City", "Country", "CIT/Vault", "Service", "SLACategory", "Condition", "Serv Acc Mon", "Serv Acc Sat", "Serv Acc Sun", "Status", "Reason", "Description", "Created(CET)", "SLA Target Date(CET)", "Closed(CET)", "Age", "Contractual Reaction Time", "Overdue By absolute", "Overdue By Srv.Hrs", "On Time", "Charged call", "Reference ID", "Reference priority", "Comments", "SLA Category"}),

和：

allHeaders = List.Combine(List.Transform(#"Filtered Rows6"[TestFunction], Table.ColumnNames)),
headersToExpand = List.Distinct(allHeaders),
#"Expanded TestFunction" = Table.ExpandTableColumn(#"Filtered Rows6", "TestFunction", headersToExpand),

（您需要单击查询编辑器左上角的“高级编辑器”并替换那里的代码。）

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