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Regular Visitor

Dynamic filename in folder and 30000 row limit


I got a query that connects to the “newest” *.xlsx file in a folder, that is automatically created every night.
Its easy to filter out the latest file due to the naming. “Excel2023050506 00 36.xlsx” *(yyyymmddhh mm ss).


This has worked fine, until the file contained more than 30 000 rows that seems to be the limit, despite its an excel file…


Note: If I connect a query to the latest file directly, it works fine, but not when using this dynamic way.

I’m quite new to power query and searching for an answer 🙂

Advocate I
Advocate I

Community Support
Community Support

Hi @tomand05 ,

I created a test folder with 30,000+ excel files and my steps are as follows for your reference.



Get data --> folder --> transform data --> select Name column and right-click --> Sort Descending


Keep the first row;




Power bi Desktop [Version: 2.116.622.0 64-bit (April 2023)


Best Regards,

Community Support Team


If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly. If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

How to get your questions answered quickly --  How to provide sample data in the Power BI Forum

It’s not 30 000 files... It’s more than 30 000 rows of data in the excel file .

Super User
Super User

Hi @tomand05 ,

How does your query look like? Could you share it?

Do you get an error for that particular file, if so which one?


If this post answered your question, please mark it as a solution to help other users find useful content.
Kudos are another nice way to acknowledge those who tried to help you.

J. Payeras
Mallorca, Spain

I hoop this is the correct parts of the query 



Exempelfil meta [IsParameterQuery=true, BinaryIdentifier=Exempelfil, Type="Binary", IsParameterQueryRequired=true]

    Källa = Folder.Files("\\aaa\bbb\ccc\ddd\AXIntegration\CSandWHD\Reports"),
    #"Filtrerade rader" = Table.SelectRows(Källa, each not Text.StartsWith([Name], "~")),
    #"Sorterade rader" = Table.Sort(#"Filtrerade rader",{{"Name", Order.Descending}}),
    #"Behåll första rader" = Table.FirstN(#"Sorterade rader",1),
    Navigering1 = #"Behåll första rader"{0}[Content]

    Källa = (Parameter1 as binary) => let
        Källa = Excel.Workbook(Parameter1, null, true),
        #"Ax Data_Sheet" = Källa{[Item="Ax Data",Kind="Sheet"]}[Data],
        #"Upphöjda rubriker" = Table.PromoteHeaders(#"Ax Data_Sheet", [PromoteAllScalars=true]),
        #"Ändrad typ" = Table.TransformColumnTypes(#"Upphöjda rubriker",{{"ItemId", Int64.Type}, {"Deleted part", type text}})
        #"Ändrad typ"




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