Selecting certain columns from a single row that contain @

I am attempting to extract a single row from a MySQL database table, but with certain parameters specified. The username of the row has to match what was used to login, and the variable $groupname must match as well. I only want to pull out data from the columns whose data contains the @ symbol (so that I know it's an email). What is the best way to do this?

EDIT: The table has the following rows: id, timestamp, username, groupname, and group emails labelled ge1-ge10. I want to pull out only the ge columns from a single row that have content.