Get de colum calculated with language M

[Anonymous]

Hi, I have a table below:

I need to create a end data column as:

The end data is calculated as:
1- If exist a new status each id, the end data is equal a first data de next status.
2- If not exist a new status, the end data is equal a data now. 

I need to build this columns in power bi query, but i don´t can it. 

Someone can help me please?

[AlB · Accepted solution]

Hi @Anonymous 

You could also do this in DAX but if you need in in PQ, place the following M code in a blank query to see the steps:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUXIEYkN9Q30jAyMDpVidaCUjqKCxvilC0BgqaKpvhiroBNJupG+Bqh8kagYXjAUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, Status = _t, #"First data" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", Int64.Type}, {"Status", type text}, {"First data", type date}}),

    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each let aux_ = Table.SelectRows(#"Changed Type", (inner)=> inner[Status]<>[Status] and inner[First data] > [First data] and inner[ID]=[ID])[First data], res_ = if List.Count(aux_) = 0 then "now" else List.Min(aux_) in res_, type text)
in
    #"Added Custom"

Please mark the question solved when done and consider giving a thumbs up if posts are helpful.

Contact me privately for support with any larger-scale BI needs, tutoring, etc.

Cheers 

[Ashish_Mathur]

Hi,

This calculated column formula works

=if(CALCULATE(COUNTROWS(Data),FILTER(Data,Data[ID]=EARLIER(Data[ID])&&Data[First Data]>EARLIER(Data[First Data])))<1,today(),CALCULATE(min(Data[First Data]),FILTER(Data,Data[ID]=EARLIER(Data[ID])&&Data[First Data]>EARLIER(Data[First Data]))))

Hope this helps.

[AlB · Accepted solution]

@Anonymous 

See it all at work in the attached file.

Please mark the question solved when done and consider giving a thumbs up if posts are helpful.

Contact me privately for support with any larger-scale BI needs, tutoring, etc.

Cheers 

[mahoneypat]

Try removing the double quotes around your column names when inside the [ ] in the #"Added Custom" step.

Regards,

Pat

[AlB · Accepted solution]

Hi @Anonymous 

You could also do this in DAX but if you need in in PQ, place the following M code in a blank query to see the steps:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUXIEYkN9Q30jAyMDpVidaCUjqKCxvilC0BgqaKpvhiroBNJupG+Bqh8kagYXjAUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, Status = _t, #"First data" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", Int64.Type}, {"Status", type text}, {"First data", type date}}),

    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each let aux_ = Table.SelectRows(#"Changed Type", (inner)=> inner[Status]<>[Status] and inner[First data] > [First data] and inner[ID]=[ID])[First data], res_ = if List.Count(aux_) = 0 then "now" else List.Min(aux_) in res_, type text)
in
    #"Added Custom"

Please mark the question solved when done and consider giving a thumbs up if posts are helpful.

Contact me privately for support with any larger-scale BI needs, tutoring, etc.

Cheers 

[Anonymous]

Error appears, when I adapted for my table. 

[Greg_Deckler]

@ImkeF @edhans