I have a particular issue with columns.

I have 4 columns. I need to iterate through the 4 columns (say H - K).
The values in the columns are put there from a database record set.
The record set, therefore, has a row length that could be variable,
depending on the number of records.

how can I iterate through 1-4 columns or any columns with data and
select the data from the column and get it's address?