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Hannisky's avatar
Hannisky
Frequent Visitor
2 years ago
Solved

Help with List generate

I am trying to get a sum of [Amt1] where [Dt2] is larger than [Dt1] (or Blank). The tricky part is that rows from future dates should be excluded.  I'm trying to do this via List.Generate but am not...
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  • Anonymous's avatar
    Anonymous
    2 years ago

    Hi Hannisky 

    You can put the following code to advanced editor in power query

    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("hZJBDoAgDAT/wtmElkIsbyH8/xsaIaTKNiYerDvCZKG1kChJ5BSFw/EemEI/IMBR6Bl24H7Efl6oGbIL0FikAOAr9Ppv2RmAgLG4wFwhuwBSs0AdOzDIP2YVmIuXg8rqT2M2B1Y21r03heeoP10pKLt4Oe33S/cmgZR99+xOV24q9Qs=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Dt1 = _t, Dt2 = _t, Amt1 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Dt1", type date}, {"Dt2", type date}, {"Amt1", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Amt2", each let 
_select=Table.SelectRows(#"Changed Type",(x)=>x[Dt1]<=[Dt1] and (x[Dt2]>x[Dt1] or x[Dt2]=null))
in List.Sum(_select[Amt1]))
in
    #"Added Custom"

    Output

    Best Regards!

    Yolo Zhu

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

     

Anonymous's avatar
Anonymous
Not applicable
2 years ago

Hi Hannisky 

You can put the following code to advanced editor in power query

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("hZJBDoAgDAT/wtmElkIsbyH8/xsaIaTKNiYerDvCZKG1kChJ5BSFw/EemEI/IMBR6Bl24H7Efl6oGbIL0FikAOAr9Ppv2RmAgLG4wFwhuwBSs0AdOzDIP2YVmIuXg8rqT2M2B1Y21r03heeoP10pKLt4Oe33S/cmgZR99+xOV24q9Qs=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Dt1 = _t, Dt2 = _t, Amt1 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Dt1", type date}, {"Dt2", type date}, {"Amt1", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Amt2", each let 
_select=Table.SelectRows(#"Changed Type",(x)=>x[Dt1]<=[Dt1] and (x[Dt2]>x[Dt1] or x[Dt2]=null))
in List.Sum(_select[Amt1]))
in
    #"Added Custom"

Output

Best Regards!

Yolo Zhu

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

 

Hannisky's avatar
Hannisky
Frequent Visitor
2 years ago

Hi, yes thank you so much 🙏 This was exactly what I needed. I owe you a cup of hot cocoa or something 😊
One thing I did change the inner loop (x) to check against the outer record [Dt1] instead of itself x[Dt1], in case anyone reuses the code. Both work but give slightly different results. 

Changed this: 

and (x[Dt2]>x[Dt1] or x[Dt2]=null))

to this...

and (x[Dt2]>[Dt1] or x[Dt2]=null))

 ...worked like a charm.