Forum Discussion
trying to extract file type from file path
Hi Anonymous - use this formula:
Text.AfterDelimiter([Path], ".", {0, RelativePosition.FromEnd})It will find the first period from the right (end) of the path, then give you all text after that period. Full M code:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("JclBCoAgEADAr4j33NondKtjHSPEYoWNckNF6PcZwdxmWbTzngPnB2Y+C0Vwe+ZClkOhlCUmuCkmCXC5G4YA2GILHX7+SLaXTU1GjUL226bDyhz19Lq+", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Path = _t]), #"Added Custom" = Table.AddColumn(Source, "Extension", each Text.AfterDelimiter([Path], ".", {0, RelativePosition.FromEnd})) in #"Added Custom"How to use M code provided in a blank query:
1) In Power Query, select New Source, then Blank Query
2) On the Home ribbon, select "Advanced Editor" button
3) Remove everything you see, then paste the M code I've given you in that box.
4) Press Done
5) See this article if you need help using this M code in your model.
Hi Anonymous ,
If the file path is stored as a column, the below approach can be taken:
You can do that in Power Query by right clicking on the column and splitting based on a delimiter. It will then give you an option to select the specific delimiter(in your case it will be ".") and select the option of right most delimeter.
The corresponding M query as below:
= Table.SplitColumn(#"Split Column by Position", "File path", Splitter.SplitTextByEachDelimiter({"."}, QuoteStyle.Csv, true), {"File Path", "File Extension"})
Please let me know if it helps.
ended up doing in this way:
- find the last occurence of the [FindLastPeriod] = Table.AddColumn(#"Duplicated Column1", "FindLastPeriod", each Text.PositionOf([Name], ".", Occurrence.Last))
- then a Text.Middle([Name], [FindLastPeriod], 20))