Combining data from different sources based on data readiness

Anonymous , I used A, B, C as table names

a New table in DAX

New Table =
var _tab1 = union(calculateTable(B, B[opportunity] in except(all(B[opportunity]),all(C[opportunity]))),C)
return
union(calculateTable(A, A[opportunity] in except(all(A[opportunity]),all(_tab1[opportunity]))),_tab1)

Hi Anonymous ,

You will need to add a custom column for each table, for example tablea is 1 tableb is 2 and tablec is 3.

Then use append queries feature to combine these 3 tables.

Here's the query.

let
    Source = Table.Combine({#"Table a", #"Table b", #"Table c"}),
    #"Grouped Rows" = Table.Group(Source, {"opportunity"}, {{"max", each List.Max([Custom]), type number}, {"amount", each _, type table [opportunity=nullable text, amount=nullable number, Custom=number]}}),
    #"Expanded amount" = Table.ExpandTableColumn(#"Grouped Rows", "amount", {"opportunity", "amount", "Custom"}, {"amount.opportunity", "amount.amount", "amount.Custom"}),
    #"Added Custom" = Table.AddColumn(#"Expanded amount", "Custom", each if [max] = [amount.Custom] then 1 else 0),
    #"Filtered Rows" = Table.SelectRows(#"Added Custom", each ([Custom] = 1)),
    #"Removed Columns" = Table.RemoveColumns(#"Filtered Rows",{"max", "amount.opportunity", "amount.Custom", "Custom"})
in
    #"Removed Columns"

Pbix as attached.

Best Regards,

Jay