Forum Discussion
Combine columns if not null or empty
Good catch Marcel but I have other columns :)
Thanks for your help, you pointed me to the right way !
here the solution :
= Table.AddColumn(#"Reordered Columns", "Personnalisé", each Text.Combine(List.Select(Record.FieldValues(Record.FromList({[Col1],[Col2],[Col3]}, type [Col1 = text,Col2 = text,Col3 = text])), each _<> "" and _ <> null)," & "))
Thanks again
Pleased you solved your own issue.
I'd rather had shortened the code a bit:
= Text.Combine(List.Select({[Col1],[Col2],[Col3],[Col4]}, each _<> "" and _ <> null)," & ")
Hello MacelBeug
Would you be so kind, if possible, to give me a hint to solve my problem. It is very close to the one you solved here. There's no concatenation, and it is very close to the problem of union of sets in Set Theory...
There are sometimes I get the value for a key column using some join. Sometimes you look in serveral sources to get the values. In some sources you get the value but not in others.... At the end you only wish a column with a key value
Well I believe the best is to show a sample. I would like to get the red values in "column e"
Thank you very much in advance
Hi,
Here is the M code i used
let
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Text1", type text}, {"Text2", type text}, {"Text3", type text}, {"Text4", type text}}),
#"Replaced Value" = Table.ReplaceValue(#"Changed Type",null,"",Replacer.ReplaceValue,{"Text1", "Text2", "Text3", "Text4"}),
#"Inserted Merged Column" = Table.AddColumn(#"Replaced Value", "Merged", each Text.Combine({[Text1], [Text2], [Text3], [Text4]}, ""), type text),
#"Split Column by Position" = Table.SplitColumn(#"Inserted Merged Column", "Merged", Splitter.SplitTextByPositions({0, 1}, false), {"Merged.1", "Merged.2"}),
#"Changed Type1" = Table.TransformColumnTypes(#"Split Column by Position",{{"Merged.1", type text}, {"Merged.2", type text}}),
#"Removed Columns" = Table.RemoveColumns(#"Changed Type1",{"Merged.2"})
in
#"Removed Columns"
Thank you very much! It works fine! I'm trying to learn M, and this a is a very good and really useful example!
You are welcome. If my reply helped, please mark it as Answer.
I have run yor M code and it works, but when I analyzed the code I realized you took advantange that every cell with data in my table has lenght just one (it just for a brief example) and you split column by position. In this case position "1" always works.
Imagine that in the cells of a certain row were just a word like "Luke", now the split position would be the length of the word "Luke". In the other rows could be another different length...
I suppose that an algorithm following your idea would be: calculate the maximum of the lenghts of each items on each row, maybe you have to use a dummy column with a value to concatenate further.... or maybe just a different approach to solve the problem!