The idea is to turn a table filled with 1 and blank cell where the useful info is in the headers into a table with useful info and "" cells and then into a compact table with only the useful info.
I have this :Raw 1 and blanks cells table
That, through this formula =IF(Table1=1;Table1[#Headers];""), I turn into this :
Transformed Useful info and "" cells table
And I lack the mean to dynamically turn it into this :Final only useful info table
For now I have work around with BYROW and TEXTJOIN but it's not ideal since everything is concatenated into on cell by row :Workaround table
=BYROW(Table1;LAMBDA(row;TEXTJOIN(" ; ";TRUE;IF(row;Table1[#Headers];""))))
The good solution would be to unpivot through Power Query and get a real data table but this is not a solution here.
This question talks about this problem with a column but I would like a general solution freed for the FILTER function limitation.
Thank you