Forum Discussion
Append Dynamically
My requirement should be fairly achievavble (to all the PQ Experts 🙂
I have data coming in horizontally and I want to stack certain columns below it. The below SS will tell you better. Please advise..
This is what I have
This is what I need
**Note: The table will continue to expand horizontally. So the stacking must happen dynamically**
- Split the list of column names into pairs using List.Split.
- Combine all the number columns by taking the values from the first column name in each pair.
- Combine all the text columns by taking the values from the second column name in each pair.
- Combine these two lists into a single table using Table.FromColumns.
Here's a full sample query you can paste into the Advanced Editor:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUUoEYhMgTgZicyBOU4rViVYyArKSgNgUiFOA2AKI08EyxlC1ZkCcCsSWQJyhFBsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t, Column4 = _t, Column5 = _t, Column6 = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", Int64.Type}, {"Column2", type text}, {"Column3", Int64.Type}, {"Column4", type text}, {"Column5", Int64.Type}, {"Column6", type text}}), ColPairs = List.Split(Table.ColumnNames(#"Changed Type"), 2), NumberCol = List.Combine(List.Transform(List.Transform(ColPairs, each _{0}), each Table.Column(#"Changed Type", _))), TextCol = List.Combine(List.Transform(List.Transform(ColPairs, each _{1}), each Table.Column(#"Changed Type", _))), Combined = Table.FromColumns({NumberCol, TextCol}, {"Number", "Text"}) in Combined
4 Replies
- Split the list of column names into pairs using List.Split.
- Combine all the number columns by taking the values from the first column name in each pair.
- Combine all the text columns by taking the values from the second column name in each pair.
- Combine these two lists into a single table using Table.FromColumns.
Here's a full sample query you can paste into the Advanced Editor:
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUUoEYhMgTgZicyBOU4rViVYyArKSgNgUiFOA2AKI08EyxlC1ZkCcCsSWQJyhFBsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t, Column4 = _t, Column5 = _t, Column6 = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", Int64.Type}, {"Column2", type text}, {"Column3", Int64.Type}, {"Column4", type text}, {"Column5", Int64.Type}, {"Column6", type text}}), ColPairs = List.Split(Table.ColumnNames(#"Changed Type"), 2), NumberCol = List.Combine(List.Transform(List.Transform(ColPairs, each _{0}), each Table.Column(#"Changed Type", _))), TextCol = List.Combine(List.Transform(List.Transform(ColPairs, each _{1}), each Table.Column(#"Changed Type", _))), Combined = Table.FromColumns({NumberCol, TextCol}, {"Number", "Text"}) in CombinedWhen you say "continue to expand horizontally", do you mean you'll be adding additional columns (and they'll always come in ordered pairs of number and text)?