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SaaM's avatar
SaaM
Helper II
5 years ago
Solved

Equivalent DAX Formula in Power query ?

Hi all,   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( MINX( Filter( Table, and( Tabl...
Need Help
  • stevedep's avatar
    stevedep
    5 years ago

    Hi,

     

    It can be done like this:

    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"

    Hope it helps.

    Kind regards, Steve. 

     

stevedep's avatar
stevedep
Memorable Member
5 years ago

Hi,

 

It can be done like this:

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"

Hope it helps.

Kind regards, Steve.