Forum Discussion
How to expand all nested tables at once table.expandtablecolumn
- 9 years ago
The code below expands all nested tables from this webpage (as an example) as requested, but I'm note sure if the result makes much sense.
It includes an embedded recursive function fnCombineAll.Possibly some further refinement would be required, but at least we have a start.
let Source = Web.Page(Web.Contents("https://community.powerbi.com/t5/Desktop/How-to-expand-all-nested-tables-at-once-table-expandtablecolumn/m-p/129451#U129451")), Data0 = Source{0}[Data], ChildrenWithTable = Table.SelectRows(Data0, each [Children] is table), fnCombineAll = (TableSoFar as table, newChildren as table) as table => let Combined = Table.Buffer(Table.Combine(List.Union({{TableSoFar},newChildren[Children]}))), ChildrensChildrenWithTable = Table.AddColumn(newChildren, "ChildrensChildren", each Table.SelectRows([Children], each [Children] is table)), ChildrensChildrenCombined = Table.Combine(ChildrensChildrenWithTable[ChildrensChildren]), CombinedAll = if Table.RowCount(ChildrensChildrenCombined) = 0 then Combined else @fnCombineAll(Combined, ChildrensChildrenCombined) in CombinedAll, CombinedAll = if Table.RowCount(ChildrenWithTable) = 0 then Data0 else fnCombineAll(Data0, ChildrenWithTable), #"Added Index" = Table.AddIndexColumn(CombinedAll, "Index", 1, 1), #"Reordered Columns" = Table.ReorderColumns(#"Added Index",{"Index", "Kind", "Name", "Children", "Text"}) in #"Reordered Columns"
The code below expands all nested tables from this webpage (as an example) as requested, but I'm note sure if the result makes much sense.
It includes an embedded recursive function fnCombineAll.
Possibly some further refinement would be required, but at least we have a start.
let
Source = Web.Page(Web.Contents("https://community.powerbi.com/t5/Desktop/How-to-expand-all-nested-tables-at-once-table-expandtablecolumn/m-p/129451#U129451")),
Data0 = Source{0}[Data],
ChildrenWithTable = Table.SelectRows(Data0, each [Children] is table),
fnCombineAll = (TableSoFar as table, newChildren as table) as table =>
let
Combined = Table.Buffer(Table.Combine(List.Union({{TableSoFar},newChildren[Children]}))),
ChildrensChildrenWithTable = Table.AddColumn(newChildren, "ChildrensChildren", each Table.SelectRows([Children], each [Children] is table)),
ChildrensChildrenCombined = Table.Combine(ChildrensChildrenWithTable[ChildrensChildren]),
CombinedAll = if Table.RowCount(ChildrensChildrenCombined) = 0 then Combined else @fnCombineAll(Combined, ChildrensChildrenCombined)
in
CombinedAll,
CombinedAll = if Table.RowCount(ChildrenWithTable) = 0 then Data0 else fnCombineAll(Data0, ChildrenWithTable),
#"Added Index" = Table.AddIndexColumn(CombinedAll, "Index", 1, 1),
#"Reordered Columns" = Table.ReorderColumns(#"Added Index",{"Index", "Kind", "Name", "Children", "Text"})
in
#"Reordered Columns"
- cpinho9 years ago
Advocate I
Hi Marcel,
Thank you very much for you great assistance. Trying to put it working together. But sometimes is just a mess.
- Anonymous8 years agoNot applicable
Hello,
I need to do a similar thing as I also have rows with nested tables. Is there a way to do this via the UI?
Thank you
J
- DebbieE7 years ago
Community Champion
Im new to Power BI and Im not sure how you would use the above code.
Do you have the steps on how to actually implement this?
Thanks
- ooptennoort2 years ago
Advocate I
Dear Marcel, I've been trying to get your code to work but... I've changed the url and row (Source = Web.Page(Web.Contents("https://community.fabric.microsoft.com/t5/Desktop/How-to-expand-all-nested-tables-at-once-table-expandtablecolumn/m-p/129451#U129451")),
Data0 = Source{2}[Data],) but still... this code should expand all Children, right and check for children in children etc? What am I doing wrong? - ooptennoort2 years ago
Advocate I
I now see I should not have "gone" to the end of all steps but filled in the parameters for fnCombineAll, but... what parameters? What other tables have we besides the ones in this/provided url? I'm lost 😉 Can you explain a bit? (Is your code still relevant, so many years on??)