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SaaM's avatar
SaaM
Icon for Helper II rankHelper II
5 years ago

Equivalent DAX Formula in Power query ?

Hi everybody, It s my first post here.   I am trying to convert a DAX formula in Power Query and so far I have not find the solution   My DAX formula is :         Column = IF( ISBLANK( ...
Need Help
Anonymous's avatar
Anonymous
Not applicable
5 years ago

Hi SaaM ,

 

Could you tell me if your problem has been solved? If it is, kindly Accept it as the solution. More people will benefit from it.

 

Best Regards,
Eyelyn Qin

SaaM's avatar
SaaM
Icon for Helper II rankHelper II
5 years ago

Hi Anonymous,

 

The solution you proposed is not fitting 100% to my problem, that's the reason why I didn t accept it as solution.

The solution in M is as follow:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjQwMDA1UNJRMlSK1UHiGqFyzVG5FqhcQwME3xDIN0XloksbGqLx0dQboRsH5McCAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Item = _t, Column = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Item", Int64.Type}, {"Column", Int64.Type}}),
    fnPrevMaxInLine = (tbl as table, item as number, val as number) => let 
        FilterTbl = Table.SelectRows(tbl, each ([Item] = item and [Column] < val)),
        MaxCol = List.Max(FilterTbl[Column])
        in MaxCol,
    #"Added Custom" = Table.AddColumn(#"Changed Type", "PrevMax", each fnPrevMaxInLine(#"Changed Type", [Item], [Column]))
in
    #"Added Custom"

 

Kind regards

 

Saam

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjQwMDA1UNJRMlSK1UHiGqFyzVG5FqhcQwME3xDIN0XloksbGqLx0dQboRsH5McCAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Item = _t, Column = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Item", Int64.Type}, {"Column", Int64.Type}}),
    fnPrevMaxInLine = (tbl as table, item as number, val as number) => let 
        FilterTbl = Table.SelectRows(tbl, each ([Item] = item and [Column] < val)),
        MaxCol = List.Max(FilterTbl[Column])
        in MaxCol,
    #"Added Custom" = Table.AddColumn(#"Changed Type", "PrevMax", each fnPrevMaxInLine(#"Changed Type", [Item], [Column]))
in
    #"Added Custom"​