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Get data from single cell in DataSet (M Language)
Hello!
I have a large Excel file with structure like this
During file load procedure i want to define report_date (16/02/2019), create new column and fill it with this report_date. After that i will delete 5 first row, then promote first row as headers, etc...
Unfortunately, I have no idea how i can define it inside Advance Editor
let
Source = Excel.Workbook(File.Contents("C:\demo.xlsx"), null, true),
Sheet1_Sheet = Source{[Item="Sheet1",Kind="Sheet"]}[Data],
#"Changed Type" = Table.TransformColumnTypes(Sheet1_Sheet,{{"Column1", type text}, {"Column2", type text}, {"Column3", type text}}),
#"Removed Top Rows" = Table.Skip(#"Changed Type",5),
#"Promoted Headers" = Table.PromoteHeaders(#"Removed Top Rows", [PromoteAllScalars=true]),
#"Changed Type1" = Table.TransformColumnTypes(#"Promoted Headers",{{"Col1", type text}, {"Col2", type text}, {"Col3", type text}})
in
#"Changed Type1"Hi,
Try this M code
let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content], #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type any}, {"Column2", type any}, {"Column3", type text}}), #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each if [Column1]="Report_Date" then [Column2] else null), #"Filled Down" = Table.FillDown(#"Added Custom",{"Custom"}), #"Added Custom1" = Table.AddColumn(#"Filled Down", "Custom.1", each if [Column1]="Col1" then "Report_Date" else [Custom]), #"Removed Columns" = Table.RemoveColumns(#"Added Custom1",{"Custom"}), #"Removed Top Rows" = Table.Skip(#"Removed Columns",5), #"Promoted Headers" = Table.PromoteHeaders(#"Removed Top Rows", [PromoteAllScalars=true]), #"Changed Type1" = Table.TransformColumnTypes(#"Promoted Headers",{{"Col1", Int64.Type}, {"Col2", type text}, {"Col3", type text}, {"Report_Date", type datetime}}) in #"Changed Type1"This is the result i get
4 Replies
Hi az38 ,
In Power query you can reference previous steps on your query to get a result.
I made a query that gets the report as you need (only difference is the source).
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WCnIN8A8Kifdz9HVV0lECoVidaCUkJlSBi2MISIGhmb6Bkb6RgaElTN7RxcUzxNPfz9FHwdPPzR+7Ic75OYZANpAyglDGYGGQWCIIG4K5ILkkENcIzDUGMpNBXIhiEyAzBcQ1AXNNgcxUENdUKTYWAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t]), #"Added Index" = Table.AddIndexColumn(Source, "Index", 1, 1), #"Added Custom1" = Table.AddColumn(#"Added Index", "Custom", each if [Index] = 6 then #"Added Index"{[Index] -4 } [Column1] else if [Index] = 7 then #"Added Index"{[Index] -5 } [Column2] else null), Remove_Top_Rows = Table.Skip(#"Added Custom1",5), Fill_Down = Table.FillDown(Remove_Top_Rows,{"Custom"}), Promote_Headers = Table.PromoteHeaders(Fill_Down, [PromoteAllScalars=true]), Remove_Index = Table.RemoveColumns(Promote_Headers,{"6"}), #"Changed Type" = Table.TransformColumnTypes(Remove_Index,{{"Col1", Int64.Type}, {"Col2", type text}, {"Col3", type text}, {"REPORT_DATE", type date}}) in #"Changed Type"Explanation:
- Add and Index Column (Just to reference data)
- Add Custom columns with the following code:
if [Index] = 6 then #"Added Index"{[Index] -4 } [Column1] else if [Index] = 7 then #"Added Index"{[Index] -5 } [Column2] else null- What this formula does is to check if row as index 6 and get the number 4 rows above of column 1 (REPORT_DATE) and if is 7 then get value 5 rows above columns 2 (16/02/2019) else gives null values
- Remove top rows
- On column Report_Date do a fill down
- Rigth click the Report Date column and choose Fill down
- Promote Headers
- Format the data
Check the PBIX file attach.
Regards,
MFelix
Hi,
Try this M code
let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content], #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type any}, {"Column2", type any}, {"Column3", type text}}), #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each if [Column1]="Report_Date" then [Column2] else null), #"Filled Down" = Table.FillDown(#"Added Custom",{"Custom"}), #"Added Custom1" = Table.AddColumn(#"Filled Down", "Custom.1", each if [Column1]="Col1" then "Report_Date" else [Custom]), #"Removed Columns" = Table.RemoveColumns(#"Added Custom1",{"Custom"}), #"Removed Top Rows" = Table.Skip(#"Removed Columns",5), #"Promoted Headers" = Table.PromoteHeaders(#"Removed Top Rows", [PromoteAllScalars=true]), #"Changed Type1" = Table.TransformColumnTypes(#"Promoted Headers",{{"Col1", Int64.Type}, {"Col2", type text}, {"Col3", type text}, {"Report_Date", type datetime}}) in #"Changed Type1"This is the result i get
Thx!
Solution looks light and easy and works prety well!
