Forum Discussion
Adding new column by summing a filtered column from another table
Hello Gurus,
I would just like to ask for some assistance on how I can achieve this result while in Power Query. I tried to do it in DAX using calculated columns, but I would like to do the transform while in Power Query as much as possible. Unfortunately, I am at a loss how to do this, as my knowledge is not there yet 😞
I have 2 tables:
Records Table:
Record IDMax Score
|
Data Table:
Record IDCategoryScore
|
What I would like to achieve is to add new columns in the record table that will put the category scores, the total score and the percent score (Total Cat Score / Max Score *100) such that the resulting table will be similar to this:
Records Table (Final Result)
Record IDMax ScoreCat ACat BCat CCat DCat ECat FTotal Cat ScorePct Score
|
Will this be possible to do just within Power Query? If so, can you help me how I can do this in Power Query?
Appreciate any help in advance!
Hi Anonymous ,
You can try this query in the Records Table:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8nQxMDBU0lEyMTBQitWB8I2AfFMkvjGQbwTnV1RUAPnGIH4sAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Record ID" = _t, #"Max Score" = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Record ID", type text}, {"Max Score", Int64.Type}}), #"Added Custom" = Table.AddColumn(#"Changed Type", "Category", each List.Distinct(Data[Category])), #"Expanded Category" = Table.ExpandListColumn(#"Added Custom", "Category"), #"Merged Queries" = Table.NestedJoin(#"Expanded Category", {"Record ID", "Category"}, Data, {"Record ID", "Category"}, "Data", JoinKind.LeftOuter), #"Expanded Data" = Table.ExpandTableColumn(#"Merged Queries", "Data", {"Score"}, {"Data.Score"}), #"Sorted Rows" = Table.Sort(#"Expanded Data",{{"Record ID", Order.Ascending}, {"Category", Order.Ascending}}), #"Added Custom1" = Table.AddColumn(#"Sorted Rows", "Total Cat Score", each let id = [Record ID] in List.Sum(Table.SelectRows(#"Sorted Rows", each [Record ID] = id)[Data.Score]),type number), #"Added Custom2" = Table.AddColumn(#"Added Custom1", "Cat", each "Cat " & [Category], type text), #"Removed Columns" = Table.RemoveColumns(#"Added Custom2",{"Category"}), #"Pivoted Column" = Table.Pivot(#"Removed Columns", List.Distinct(#"Removed Columns"[Cat]), "Cat", "Data.Score"), #"Reordered Columns" = Table.ReorderColumns(#"Pivoted Column",{"Record ID", "Max Score", "Cat A", "Cat B", "Cat C", "Cat D", "Cat E", "Total Cat Score"}), #"Added Custom3" = Table.AddColumn(#"Reordered Columns", "Pct Score", each [Total Cat Score] / [Max Score] * 100, type number) in #"Added Custom3"Best Regards,
Community Support Team _ Yingjie Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
2 Replies
Hi Anonymous ,
You can try this query in the Records Table:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8nQxMDBU0lEyMTBQitWB8I2AfFMkvjGQbwTnV1RUAPnGIH4sAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Record ID" = _t, #"Max Score" = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Record ID", type text}, {"Max Score", Int64.Type}}), #"Added Custom" = Table.AddColumn(#"Changed Type", "Category", each List.Distinct(Data[Category])), #"Expanded Category" = Table.ExpandListColumn(#"Added Custom", "Category"), #"Merged Queries" = Table.NestedJoin(#"Expanded Category", {"Record ID", "Category"}, Data, {"Record ID", "Category"}, "Data", JoinKind.LeftOuter), #"Expanded Data" = Table.ExpandTableColumn(#"Merged Queries", "Data", {"Score"}, {"Data.Score"}), #"Sorted Rows" = Table.Sort(#"Expanded Data",{{"Record ID", Order.Ascending}, {"Category", Order.Ascending}}), #"Added Custom1" = Table.AddColumn(#"Sorted Rows", "Total Cat Score", each let id = [Record ID] in List.Sum(Table.SelectRows(#"Sorted Rows", each [Record ID] = id)[Data.Score]),type number), #"Added Custom2" = Table.AddColumn(#"Added Custom1", "Cat", each "Cat " & [Category], type text), #"Removed Columns" = Table.RemoveColumns(#"Added Custom2",{"Category"}), #"Pivoted Column" = Table.Pivot(#"Removed Columns", List.Distinct(#"Removed Columns"[Cat]), "Cat", "Data.Score"), #"Reordered Columns" = Table.ReorderColumns(#"Pivoted Column",{"Record ID", "Max Score", "Cat A", "Cat B", "Cat C", "Cat D", "Cat E", "Total Cat Score"}), #"Added Custom3" = Table.AddColumn(#"Reordered Columns", "Pct Score", each [Total Cat Score] / [Max Score] * 100, type number) in #"Added Custom3"Best Regards,
Community Support Team _ Yingjie Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.Thanks v-yingjl! It worked perfectly!