Forum Discussion

JamesMcEwan's avatar
JamesMcEwan
Helper I
4 years ago
Solved

Expanding ListColumns within Nested Tables

Hi all,  I am looking to expand a ListColumn within a nested table, however I would like to so this without adding a new column. Is there a way to expand the list without adding a new column to the ...
Need Help
  • artpil's avatar
    artpil
    4 years ago

    Hi,

     

    So you probably want something like this:

     

    let
    Source =  
        Table.FromRecords(
            {
                [Name = "Bob",  Color = "Blue"],
                [Name = "Jim",  Color = "Yellow"],
                [Name = "Paul", Color = "Green"]
            }
        ),
#"AddTab;e"=
    Table.AddColumn (Source, "TypeID", each 
        Table.FromRecords(
            {
                [Type= "Small",     ID = {1,2,3}],
                [Type = "Medium",   ID = {2,4,6}],
                [Type = "Large",    ID = {1,3,6}]
            }
        )
    ),
    TransformColumn = Table.TransformColumns(#"AddTab;e",{"TypeID", each Table.ExpandListColumn(_, "ID")})
in
    TransformColumn

     

     

    Hope it helps,

    Artur

SolomonovAnton's avatar
SolomonovAnton
Super User
4 years ago

hello 

 

if I correctly understood you below result which you want

let
    Query1 = let
    Source =  
        Table.FromRecords(
            {
                [Name = "Bob",  Color = "Blue"],
                [Name = "Jim",  Color = "Yellow"],
                [Name = "Paul", Color = "Green"]
            }
        )
in 
    Table.AddColumn (Source, "TypeID", each 
        Table.FromRecords(
            {
                [Type= "Small",     ID = {1,2,3}],
                [Type = "Medium",   ID = {2,4,6}],
                [Type = "Large",    ID = {1,3,6}]
            }
        )
    ),
    #"Expanded TypeID" = Table.ExpandListColumn(Table.ExpandTableColumn(Query1, "TypeID", {"ID"}, {"ID"}), "ID")
in
    #"Expanded TypeID"