Forum Discussion
How to create a custom column that counts repeat objects in two columns.
Hi, I have data such that many values can appear mapped to one another multiple times. In the below example, [email protected] is mapped to click twice. [email protected] click [email protected] cl...
Anonymous Try this:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WSs7Id0jPTczM0UvOz1XSUUrOyUzOVorViVbKyMwrcahMzMjPJyxVlplaDpbBYVwsAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [email = _t, #"type" = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"email", type text}, {"type", type text}}), #"Grouped Rows" = Table.Group(#"Changed Type", {"email", "type"}, {{"Count", each Table.RowCount(_), Int64.Type}, {"Table", each _, type table [email=nullable text, type=nullable text]}}), #"Removed Columns" = Table.RemoveColumns(#"Grouped Rows",{"email", "type"}), #"Expanded Table" = Table.ExpandTableColumn(#"Removed Columns", "Table", {"email", "type"}, {"Table.email", "Table.type"}) in #"Expanded Table"
Greg_Deckler is there a way to generalize the format to be applied to any table?
Anonymous It's applicable to any table. You add an aggregation (Group By) step that groups by the columns you need it to group by. You have 2 aggregations. One is a Count of rows and one is "all rows". You end up with a table of your grouping columns along with the 2 aggregations. You then remove any columns other than the aggregation columns. Then you expand the aggregation column containing the Table.