Get value from first period applied on every other period

[mmilicic]

Hello Comunity,

I have a table and I am trying to get first value of the column "Period_Up_Today", but I can not reach it.

If anyone could help I will really appriciate it.

Thanks,

Mario

[tackytechtom]

Hi @mmilicic ,

How about this :

Here the M that you can paste into the advanced editor:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("fcyxDcAgDETRXVyDdDaQQMkciP3X4JwiHe5+8fTXkjmnJDGYZvS/BksB2ekiFF9FQlklFMaqd2EZ/mih8McTisJ6Q1FZPRSNNVzsAw==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, #"Constant Period 1" = _t, Period_Up_Today = _t, Amount = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", type text}, {"Constant Period 1", type date}, {"Period_Up_Today", type date}, {"Amount", Int64.Type}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"ID"}, {{"MinDate", each List.Min([Period_Up_Today]), type nullable date}, {"AllRows", each _, type table [ID=nullable text, Constant Period 1=nullable date, Period_Up_Today=nullable date, Amount=nullable number]}}),
    #"Expanded AllRows" = Table.ExpandTableColumn(#"Grouped Rows", "AllRows", {"Period_Up_Today", "Amount"}, {"AllRows.Period_Up_Today", "AllRows.Amount"}),
    #"Added Custom" = Table.AddColumn(#"Expanded AllRows", "FilterColumn", each if [MinDate] = [AllRows.Period_Up_Today] then 1 else 0),
    #"Filtered Rows" = Table.SelectRows(#"Added Custom", each ([FilterColumn] = 1)),
    #"Merged Queries" = Table.NestedJoin(#"Changed Type", {"ID"}, #"Filtered Rows", {"ID"}, "Filtered Rows", JoinKind.LeftOuter),
    #"Expanded Filtered Rows" = Table.ExpandTableColumn(#"Merged Queries", "Filtered Rows", {"AllRows.Amount"}, {"Filtered Rows.AllRows.Amount"})
in
    #"Expanded Filtered Rows"

Does this fix your issue? 🙂

/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/

[tackytechtom · Accepted solution]

Hi @mmilicic ,

Here a solution in DAX with a calculated column:

Here the DAX code:

Column = 
VAR _earliestDate = CALCULATE ( MINX ( ALL ( Table ), Table[Period_Up_Today] ) )
RETURN
CALCULATE ( MINX ( ALL ( Table ), Table[Amount] ), Table[Period_Up_Today] = _earliestDate ) 

Let me know if this helps, or if you'd like a solution in Power Query 🙂

/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/

[mmilicic]

All good, this works good.

Thanks 😄

[mmilicic]

Hi Tom,

Thanks 😄

Can you please show me the solution in Query?

I have a big dataset so maybe I can not get the result because of that.

All the best,

Mario