Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

The ultimate Microsoft Fabric, Power BI, Azure AI & SQL learning event! Join us in Las Vegas from March 26-28, 2024. Use code MSCUST for a $100 discount. Register Now

Reply
Trebor84
Helper II
Helper II

Grouping every 100 items in a column

Hi, I am trying to group a list of values in a column for every 100 rows then join them with a comma as seperator into a single value.  Can anyone assist with a way to do this in Power Query please?

 

Example:

 

=TEXTJOIN(",",TRUE,A2:A101)

=TEXTJOIN(",",TRUE,A102:A201)

=TEXTJOIN(",",TRUE,A202:A205)

etc

 

The end result in Power Query should look like column C below.  There is no sorting required, it just needs to concaenate the first 100 vaues then the next 100 and so on.

 

Capture.JPG

 

 

 

2 ACCEPTED SOLUTIONS
ImkeF
Super User
Super User

Hi @Trebor84 ,
you can do this by:

 

  1. Adding an Index colum
  2. Convert that Index column by a Modulo of 100
  3. Group on that new column and combine the values from the VALUE-column with comma.

Please check out this code and follow the steps:

let
    Source = Table.FromRows(
        Json.Document(
            Binary.Decompress(
                Binary.FromText(
                    "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", 
                    BinaryEncoding.Base64
                ), 
                Compression.Deflate
            )
        ), 
        let
            _t = ((type nullable text) meta [Serialized.Text = true])
        in
            type table [VALUE = _t]
    ), 
    #"Changed Type" = Table.TransformColumnTypes(Source, {{"VALUE", type text}}), 
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 0, 1, Int64.Type), 
    #"Integer-Divided Column" = Table.TransformColumns(
        #"Added Index", 
        {{"Index", each Number.IntegerDivide(_, 100), Int64.Type}}
    ), 
    #"Grouped Rows" = Table.Group(
        #"Integer-Divided Column", 
        {"Index"}, 
        {{"Count", each Text.Combine(_[VALUE], ", ")}}
    )
in
    #"Grouped Rows"

Imke Feldmann (The BIccountant)

If you liked my solution, please give it a thumbs up. And if I did answer your question, please mark this post as a solution. Thanks!

How to integrate M-code into your solution -- How to get your questions answered quickly -- How to provide sample data -- Check out more PBI- learning resources here -- Performance Tipps for M-queries

View solution in original post

wdx223_Daniel
Super User
Super User

NewStep=List.Transform(Table.Split(Table.TransformColumns(PreviousStepName,{},Text.From),100),each Text.Combine([Value],","))

View solution in original post

4 REPLIES 4
Trebor84
Helper II
Helper II

Thanks all, these work perfectly

wdx223_Daniel
Super User
Super User

NewStep=List.Transform(Table.Split(Table.TransformColumns(PreviousStepName,{},Text.From),100),each Text.Combine([Value],","))

ImkeF
Super User
Super User

Hi @Trebor84 ,
you can do this by:

 

  1. Adding an Index colum
  2. Convert that Index column by a Modulo of 100
  3. Group on that new column and combine the values from the VALUE-column with comma.

Please check out this code and follow the steps:

let
    Source = Table.FromRows(
        Json.Document(
            Binary.Decompress(
                Binary.FromText(
                    "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", 
                    BinaryEncoding.Base64
                ), 
                Compression.Deflate
            )
        ), 
        let
            _t = ((type nullable text) meta [Serialized.Text = true])
        in
            type table [VALUE = _t]
    ), 
    #"Changed Type" = Table.TransformColumnTypes(Source, {{"VALUE", type text}}), 
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 0, 1, Int64.Type), 
    #"Integer-Divided Column" = Table.TransformColumns(
        #"Added Index", 
        {{"Index", each Number.IntegerDivide(_, 100), Int64.Type}}
    ), 
    #"Grouped Rows" = Table.Group(
        #"Integer-Divided Column", 
        {"Index"}, 
        {{"Count", each Text.Combine(_[VALUE], ", ")}}
    )
in
    #"Grouped Rows"

Imke Feldmann (The BIccountant)

If you liked my solution, please give it a thumbs up. And if I did answer your question, please mark this post as a solution. Thanks!

How to integrate M-code into your solution -- How to get your questions answered quickly -- How to provide sample data -- Check out more PBI- learning resources here -- Performance Tipps for M-queries

CNENFRNL
Community Champion
Community Champion

Table.Group() does the trick at one go based on a 0-based index column,

 

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("TdG5DcIAEETRXhwTMIc5QqAMy3L/XYCEtN/Zz552dtuW1/tzaNkv//JUpjq1Tt2m7lOPqeeUriSKYIQjICEJSlgCE5rRfLoJzWhGM5rRjGY0owUtaDlNiBa0oAUtaEELWtGKVrSePoZWtKIVrWhFW3/a/gU=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Value = _t]),
    #"Added Index" = Table.AddIndexColumn(Source, "Index", 0, 1, Int64.Type),

    Grouped = Table.Group(#"Added Index", "Index", {"Grouped", each _}, 0, (x,y) => Byte.From(Number.Mod(y,10)=0))
in
    Grouped

 

 


Thanks to the great efforts by MS engineers to simplify syntax of DAX! Most beginners are SUCCESSFULLY MISLED to think that they could easily master DAX; but it turns out that the intricacy of the most frequently used RANKX() is still way beyond their comprehension!

DAX is simple, but NOT EASY!

Helpful resources

Announcements
Fabric Community Conference

Microsoft Fabric Community Conference

Join us at our first-ever Microsoft Fabric Community Conference, March 26-28, 2024 in Las Vegas with 100+ sessions by community experts and Microsoft engineering.

February 2024 Update Carousel

Power BI Monthly Update - February 2024

Check out the February 2024 Power BI update to learn about new features.

Fabric Career Hub

Microsoft Fabric Career Hub

Explore career paths and learn resources in Fabric.

Fabric Partner Community

Microsoft Fabric Partner Community

Engage with the Fabric engineering team, hear of product updates, business opportunities, and resources in the Fabric Partner Community.

Top Solution Authors
Top Kudoed Authors