M語言簡單示例--加載多個相同格式的文件到一個文件中

1.先打開文件夾中的其中一個文件

2.啓動編輯器，做相應的基礎轉換操作

3.點擊-視圖，點擊-高級編輯器

4.添加函數，修改函數中的路徑和文件名，即高亮部分

let

    源 = Excel.Workbook(File.Contents("C:\Users\DengXiaoju\Desktop\Sample Files\Chapter 12\test\WEST.XLS"), null, true),

    MySheet1 = 源{[Name="MySheet"]}[Data],

    提升的標題 = Table.PromoteHeaders(MySheet1, [PromoteAllScalars=true]),

    更改的類型 = Table.TransformColumnTypes(提升的標題,{{"Region", type text}, {"Market", type text}, {"Branch_Number", Int64.Type}, {"Customer_Name", type text}, {"State", type text}, {"Effective_Date", type text}, {"Product_Description", type text}, {"Revenue", type number}, {"TransactionCount", Int64.Type}}),

    刪除的列 = Table.RemoveColumns(更改的類型,{"Branch_Number"})

in

    刪除的列

5.修改函數

let GetMyFiles=(FilePath, FileName) =>

let

    源 = Excel.Workbook(File.Contents("C:\Users\DengXiaoju\Desktop\Sample Files\Chapter 12\test\WEST.XLS"), null, true),

    MySheet1 = 源{[Name="MySheet"]}[Data],

    提升的標題 = Table.PromoteHeaders(MySheet1, [PromoteAllScalars=true]),

    更改的類型 = Table.TransformColumnTypes(提升的標題,{{"Region", type text}, {"Market", type text}, {"Branch_Number", Int64.Type}, {"Customer_Name", type text}, {"State", type text}, {"Effective_Date", type text}, {"Product_Description", type text}, {"Revenue", type number}, {"TransactionCount", Int64.Type}}),

    刪除的列 = Table.RemoveColumns(更改的類型,{"Branch_Number"})

in

    刪除的列

in  GetMyFiles

6.-查詢設置位置重命名函數爲fnGetMyFiles1

7.-添加列-自定義列，輸入函數

=fnGetMyFiles1([Folder Path],[Name])

8.展開列