If you only want to get data with the specific columns empty, why not just build your SQL query to only pull back the results you want? I would think that would be more efficient than pulling all of the values from the DB, and THEN filtering.
That's a good point but I'm taking the results found by the SQL statement and reordering them in a weird way. Thats why I'm looking for them. So I'm not deleting them just moving them.
Good suggestion though