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Frequent Visitor

## Rationalise Rows

Hi

I'm trying to work out how to achieve the following in DAX (or Power Query) that I currently do using VBA in excel.

I have a table with data similar to the below:

 Distance From Distance To Type 0 1 Red 1 2 Red 2 4 Green 4 10 Green 10 13 Green 13 14 Red 14 33 Red 33 40 Blue 40 45 Green 45 46 Green 46 50 Red

And need to rationalise it to the below.

 Distance From Distance To Type 0 2 Red 2 13 Green 13 33 Red 33 40 Blue 40 46 Green 46 50 Red

So currently I do this in VBA by looping through the rows and keeping track of the Min [Distance From] from and Max [Distance To] until the [Type] changes. The data is alway sorted on [Distance From] ascending and the [Distance To] always matches the next rows [Distance From]

1 ACCEPTED SOLUTION
Super User

let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlDSUTIE4qDUFKVYnWgw2wiJD2KbALF7UWpqHlgExDM0QBECcw2NUcVAXEMTZKNBHGNjJBEwxwSk2SmnNBViOohnYopqI4hrYoYqBuKaGsAMiwUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Distance From" = _t, #"Distance To" = _t, Type = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Distance From", Int64.Type}, {"Distance To", Int64.Type}}),
#"Grouped Rows" = Table.Group(#"Changed Type", {"Type"}, {{"Distance From", each List.Min([Distance From]), type nullable number}, {"Distance To", each List.Max([Distance To]), type nullable number}},GroupKind.Local)
in
#"Grouped Rows"

obligatory credit: @ImkeF

2 REPLIES 2
Super User

let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlDSUTIE4qDUFKVYnWgw2wiJD2KbALF7UWpqHlgExDM0QBECcw2NUcVAXEMTZKNBHGNjJBEwxwSk2SmnNBViOohnYopqI4hrYoYqBuKaGsAMiwUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Distance From" = _t, #"Distance To" = _t, Type = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Distance From", Int64.Type}, {"Distance To", Int64.Type}}),
#"Grouped Rows" = Table.Group(#"Changed Type", {"Type"}, {{"Distance From", each List.Min([Distance From]), type nullable number}, {"Distance To", each List.Max([Distance To]), type nullable number}},GroupKind.Local)
in
#"Grouped Rows"

obligatory credit: @ImkeF

Frequent Visitor

I always discounted using group. I guess I missed reading up on the GroupKind parameter.

Thanks that worked a treat.

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