如何在 Power BI 中合并两个基于非键表的表

Posted 2023-04-14

【中文标题】如何在 Power BI 中合并两个基于非键表的表

【英文标题】：How to merge two tables based off key table in Power BI

【发布时间】：2021-07-01 14:54:58

【问题描述】：

我有 3 个 csv 输入到 Power BI，其中两个包含来自 2 个不同服务的时间跟踪信息，一个包含从它们的名称到各自 ID 的映射，如以下列标题所示：

Timestamp, 7P_ID, time_tracked, Work item type, ... Timestamp, ZD_ID, time_tracked, ticket id, ... （它们有一些不同的列标题） employee_name, 7P_ID, ZD_ID

我想制作一个表格（或至少以某种方式组合这些数据）来组合这些表格，所以我有以下标题：

Timestamp, employee_name, time_tracked, Work item type, ticket id, ...

有什么想法吗？

编辑：例如...

Timestamp	7P_ID	time_tracked	work item type
2021-09-02	333-3	90	task
...	...	...	...

Timestamp	ZD_ID	time_tracked	ticket id
2021-09-03	444-444	67	24601
...	...	...	...

Employee Name	7P_ID	ZD_ID
Jeff Bozos	333-3	444-444
...	...	...

我想要……

Timestamp	Employee name	time_tracked	work item type	ticket id
2021-09-02	Jeff Bozos	90	task
2021-09-03	Jeff Bozos	67		24601
...	...	...	...	...

当然会有多个员工，每个员工都会出现多次

编辑 2：或者，使用密钥文件将“名称”列附加到我的两次记录文件中也一样好，但这也是我不知道该怎么做的事情。

【问题讨论】：

添加一些示例数据会有所帮助

我已经更新了帖子^

【参考方案1】：

  let
  T1 = 
    let
      Source = Web.BrowserContents(
        "https://***.com/questions/68212487/how-to-merge-two-tables-based-off-key-table-in-power-bi"
      ), 
      #"Extracted Table From html" = Html.Table(
        Source, 
        
          "Column1", "DIV.s-table-container:nth-child(7) > TABLE.s-table > * > TR > :nth-child(1)", 
          "Column2", "DIV.s-table-container:nth-child(7) > TABLE.s-table > * > TR > :nth-child(2)", 
          "Column3", "DIV.s-table-container:nth-child(7) > TABLE.s-table > * > TR > :nth-child(3)", 
          "Column4", "DIV.s-table-container:nth-child(7) > TABLE.s-table > * > TR > :nth-child(4)"
        , 
        [RowSelector = "DIV.s-table-container:nth-child(7) > TABLE.s-table > * > TR"]
      ), 
      #"Changed Type" = Table.TransformColumnTypes(
        #"Extracted Table From Html", 
        
          "Column1", type text, 
          "Column2", type text, 
          "Column3", type text, 
          "Column4", type text
        
      ), 
      #"Promoted Headers" = Table.PromoteHeaders(#"Changed Type", [PromoteAllScalars = true]), 
      #"Changed Type1" = Table.TransformColumnTypes(
        #"Promoted Headers", 
        
          "Timestamp", type text, 
          "7P_ID", type text, 
          "time_tracked", type text, 
          "work item type", type text
        
      ), 
      #"Removed Bottom Rows" = Table.RemoveLastN(#"Changed Type1", 1), 
      #"Renamed Columns" = Table.RenameColumns(#"Removed Bottom Rows", "7P_ID", "ID")
    in
      #"Renamed Columns", 
  T2 = 
    let
      Source = Web.BrowserContents(
        "https://***.com/questions/68212487/how-to-merge-two-tables-based-off-key-table-in-power-bi"
      ), 
      #"Extracted Table From Html" = Html.Table(
        Source, 
        
          "Column1", "DIV.s-table-container:nth-child(8) > TABLE.s-table > * > TR > :nth-child(1)", 
          "Column2", "DIV.s-table-container:nth-child(8) > TABLE.s-table > * > TR > :nth-child(2)", 
          "Column3", "DIV.s-table-container:nth-child(8) > TABLE.s-table > * > TR > :nth-child(3)", 
          "Column4", "DIV.s-table-container:nth-child(8) > TABLE.s-table > * > TR > :nth-child(4)"
        , 
        [RowSelector = "DIV.s-table-container:nth-child(8) > TABLE.s-table > * > TR"]
      ), 
      #"Changed Type" = Table.TransformColumnTypes(
        #"Extracted Table From Html", 
        
          "Column1", type text, 
          "Column2", type text, 
          "Column3", type text, 
          "Column4", type text
        
      ), 
      #"Promoted Headers" = Table.PromoteHeaders(#"Changed Type", [PromoteAllScalars = true]), 
      #"Changed Type1" = Table.TransformColumnTypes(
        #"Promoted Headers", 
        
          "Timestamp", type text, 
          "ZD_ID", type text, 
          "time_tracked", type text, 
          "ticket id", type text
        
      ), 
      #"Removed Bottom Rows" = Table.RemoveLastN(#"Changed Type1", 1), 
      #"Renamed Columns" = Table.RenameColumns(#"Removed Bottom Rows", "ZD_ID", "ID")
    in
      #"Renamed Columns", 
  T3 = 
    let
      Source = Web.BrowserContents(
        "https://***.com/questions/68212487/how-to-merge-two-tables-based-off-key-table-in-power-bi"
      ), 
      #"Extracted Table From Html" = Html.Table(
        Source, 
        
          "Column1", "DIV.s-table-container:nth-child(9) > TABLE.s-table > * > TR > :nth-child(1)", 
          "Column2", "DIV.s-table-container:nth-child(9) > TABLE.s-table > * > TR > :nth-child(2)", 
          "Column3", "DIV.s-table-container:nth-child(9) > TABLE.s-table > * > TR > :nth-child(3)"
        , 
        [RowSelector = "DIV.s-table-container:nth-child(9) > TABLE.s-table > * > TR"]
      ), 
      #"Changed Type" = Table.TransformColumnTypes(
        #"Extracted Table From Html", 
        "Column1", type text, "Column2", type text, "Column3", type text
      ), 
      #"Promoted Headers" = Table.PromoteHeaders(#"Changed Type", [PromoteAllScalars = true]), 
      #"Changed Type1" = Table.TransformColumnTypes(
        #"Promoted Headers", 
        "Employee Name", type text, "7P_ID", type text, "ZD_ID", type text
      ), 
      #"Removed Bottom Rows" = Table.RemoveLastN(#"Changed Type1", 1), 
      #"Unpivoted Columns" = Table.UnpivotOtherColumns(
        #"Removed Bottom Rows", 
        "Employee Name", 
        "Attribute", 
        "Value"
      )
    in
      #"Unpivoted Columns", 
  #"T1+T2" = T1 & T2, 
  #"Merged Queries" = Table.NestedJoin(#"T1+T2", "ID", T3, "Value", "T1+T2", JoinKind.LeftOuter), 
  #"Expanded T1+T2" = Table.ExpandTableColumn(
    #"Merged Queries", 
    "T1+T2", 
    "Employee Name", 
    "Employee Name"
  )
in
  #"Expanded T1+T2"