扩展表时 Power Query 缺失值

Question

我有一个问题：当我尝试从许多文件中扩展表格时，我丢失了一些值。

到目前为止，我发现问题是从查询遇到空表时开始的。

我已尝试过滤掉空表，但问题仍然存在。

知道什么是问题以及如何解决吗？

查询：

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"

Answer 1

我认为您的表格中存在的标题（您想要扩展的）和您实际扩展的标题存在一些差异。

您已扩展 SLACategory 和 Order ID（在屏幕截图的上半部分），但它们可能应该分别为 SLA Category 和 OrderId（在屏幕截图的下半部分）。请注意间距和大小写的差异。

当您指定要扩展的标头 List 时（在下面的 { 和 } 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

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

要动态扩展列，您必须执行替换此行之类的操作：

#"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"}),

与：

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

（您需要点击查询编辑器左上角的“高级编辑器”并替换那里的代码。）