Conditional concatenation using Custom Column

[se2]

I having been trying to do the below using some code in a "custom column" but it does not seem to work.  In the original table, there are two names for each address and these should be combined into a single line as shown in the Desired Table.  When I try to use custom table, I run into trouble here

if  the additional column = 2

then --- I have tried various ways, none work  ---- this is where the problem is

else ' '

[Greg_Deckler · Accepted solution]

@se2 Try:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcspPUtJR8kotKqpUitWJhrKQRQyNjBVCijJzFXwS81JRZHz0HPV0FJwdUQRD8nOB/KD8pNSikkSwCIyNKmpsaa7gnpibqhCUgiYTrOcCMxYuHAsA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [name1 = _t, name2 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"name1", type text}, {"name2", type text}}),
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 2, 1, Int64.Type),
    #"Grouped Rows" = Table.Group(#"Added Index", {"name2"}, {{"Table", each _, type table [name1=nullable text, name2=nullable text, Index=number]}}),
    #"Added Custom" = Table.AddColumn(#"Grouped Rows", "Custom", each Table.AddIndexColumn([Table],"Index2",1)),
    #"Expanded Custom" = Table.ExpandTableColumn(#"Added Custom", "Custom", {"name1", "Index2"}, {"Custom.name1", "Custom.Index2"}),
    #"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Table"}),
    #"Reordered Columns" = Table.ReorderColumns(#"Removed Columns",{"Custom.name1", "name2", "Custom.Index2"}),
    #"Filtered Rows" = Table.SelectRows(#"Reordered Columns", each ([Custom.Index2] <> 2)),
    #"Added Custom1" = Table.AddColumn(#"Filtered Rows", "Custom", each if [Custom.Index2] = 1 then [Custom.name1] & "&" & [name2] else [Custom.name1]),
    #"Removed Columns1" = Table.RemoveColumns(#"Added Custom1",{"Custom.name1", "name2", "Custom.Index2"})
in
    #"Removed Columns1"

[CNENFRNL · Accepted solution]

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcspPUorViVbySi0qqgSzDI2MFUKKMnMVfBLzUsEiPnqOejoKzo5gTkh+LpgOyk9KLSpJBLONLc0V3BNzUxWCUsD8YD0XqIZYAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [originalName = _t]),
    #"Combined Names" = List.Transform(List.Split(Source[originalName], 4), each {_{0} & " & " & _{1}} & List.Skip(_, 2)),
    Names = Table.FromList(List.Combine( #"Combined Names" ), Splitter.SplitByNothing(), {"Name"})
in
    Names

[Greg_Deckler · Accepted solution]

@se2 Try:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcspPUtJR8kotKqpUitWJhrKQRQyNjBVCijJzFXwS81JRZHz0HPV0FJwdUQRD8nOB/KD8pNSikkSwCIyNKmpsaa7gnpibqhCUgiYTrOcCMxYuHAsA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [name1 = _t, name2 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"name1", type text}, {"name2", type text}}),
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 2, 1, Int64.Type),
    #"Grouped Rows" = Table.Group(#"Added Index", {"name2"}, {{"Table", each _, type table [name1=nullable text, name2=nullable text, Index=number]}}),
    #"Added Custom" = Table.AddColumn(#"Grouped Rows", "Custom", each Table.AddIndexColumn([Table],"Index2",1)),
    #"Expanded Custom" = Table.ExpandTableColumn(#"Added Custom", "Custom", {"name1", "Index2"}, {"Custom.name1", "Custom.Index2"}),
    #"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Table"}),
    #"Reordered Columns" = Table.ReorderColumns(#"Removed Columns",{"Custom.name1", "name2", "Custom.Index2"}),
    #"Filtered Rows" = Table.SelectRows(#"Reordered Columns", each ([Custom.Index2] <> 2)),
    #"Added Custom1" = Table.AddColumn(#"Filtered Rows", "Custom", each if [Custom.Index2] = 1 then [Custom.name1] & "&" & [name2] else [Custom.name1]),
    #"Removed Columns1" = Table.RemoveColumns(#"Added Custom1",{"Custom.name1", "name2", "Custom.Index2"})
in
    #"Removed Columns1"