Power Query help

Rodel Geronimo

New Member
Joined
Nov 18, 2009
Messages
23
Office Version
  1. 365
  2. 2021
  3. 2019
  4. 2016
Platform
  1. Windows
hello all, kindly help me to add a custom column in my table "REV" and a column named "Document Number". This column can have multiple duplicates so I want to keep the original and append any duplicates by "-01" and so on.

Thank you so much for your help as usual. :)
 

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The main mCode could go as follows:
Power Query:
let
    Source = Excel.CurrentWorkbook(){[Name="REV"]}[Content],
    GroupedByDocNo = Table.Group(Source, {"Document Number"}, {{"SingleDoc", each _, type table [index=nullable number, Document Number=nullable text]}}),
    AddedIndexesForEachDoc = Table.AddColumn(GroupedByDocNo, "SingleDocIndexed", each Table.AddIndexColumn([SingleDoc], "Revisions", 0, 1)),
    ExpandTablesInSingleDocIndexed = Table.ExpandTableColumn(AddedIndexesForEachDoc, "SingleDocIndexed", {"Revisions"}, {"Revisions"}),
    AddedConditionalColumn = Table.AddColumn(ExpandTablesInSingleDocIndexed, "Document Number with Rev", each if [Revisions] = 0 then [Document Number]  else [Document Number] & "-" & Number.ToText([Revisions],"00")),
    RemoveUnneded = Table.SelectColumns(AddedConditionalColumn,{"Document Number with Rev"})
in
    RemoveUnneded

The only less intuitive (semi-manual) part is Table.AddColumn where you manually add a function which would normally be clicked-out in the menu: Table.AddIndexColumn(
Normally the first argument here wouuld be a table name, but we write a column which contains tables obtained after grouping - [SingleDoc],

You may see similar work here

Probably you shal revise also which columns are removed - with the code above only number with revisions remains. Also - if column with doc numbers is a number column it shall be either changed to text or to obtained mixed type final column use changed line

Power Query:
   AddedConditionalColumn = Table.AddColumn(ExpandTablesInSingleDocIndexed, "Document Number with Rev", each if [Revisions] = 0 then [Document Number]  else Number.ToText([Document Number]) & "-" & Number.ToText([Revisions],"00")),
 
Upvote 0
Thank you so much, that worked though , added only an ascending order sort in the beginning.
 
Upvote 0
Wow, not the quickest answer :-)

but I'm glad it worked for you
 
Upvote 0

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