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nelsonwhyu's avatar
nelsonwhyu
Frequent Visitor
6 years ago
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Concatenate Dynamic COlumn

Hi, I am trying to create a new Column "Key" by concatenating every column with header starting with "Level ". However, number of Levels are dynamic and varies across my source files.  Lev...
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  • artemus's avatar
    artemus
    6 years ago
    = Table.AddColumn(Source, "Key2", each Text.Combine( List.Transform(Level_List, (col) => Record.Field(_, col)), "__")  )
Anonymous's avatar
Anonymous
Not applicable
6 years ago

nelsonwhyu  I was just giving an hint to to overcome the main problem

If you need complete solution, probably is like this:

 


newKey=Table.CombineColumns(Source, level_list, each Text.Combine(_, "__"), "keytwo"),
#"Merge di query eseguito" = Table.NestedJoin(SourceI ,{"Indice"},newKey,{"Indice"},"newKey",JoinKind.LeftOuter),
#"Tabella newKey espansa1" = Table.ExpandTableColumn(#"Merge di query eseguito", "newKey", {"keytwo"}, {"keytwo"}),
#"Rimosse colonne1" = Table.RemoveColumns(#"Tabella newKey espansa1",{"Indice"})
in
#"Rimosse colonne1"

Anonymous's avatar
Anonymous
Not applicable
6 years ago

Another way to get what you want is to do in the reverse sense what done: 😁

 

#"Duplicata colonna" = Table.DuplicateColumn(newKey,"keytwo", "keytwo - Copia"),
#"Suddividi colonna in base al delimitatore" = Table.SplitColumn(#"Duplicata colonna", "keytwo - Copia", Splitter.SplitTextByDelimiter("_", QuoteStyle.Csv), level_list)
in
#"Suddividi colonna in base al delimitatore"