# File lib/tapkit/access/adapters/openbase.rb, line 476
                def sql_for_date( date )
                        if date.nil? then
                                'NULL'
                        elsif date.class == Time then
                                "'#{date.to_s(true)}'"
                        elsif date.class == Timestamp then
                                time = date.to_time.utc
                                timestamp = Timestamp.new_with_datetime time
                                timestamp.zone = '+0000'
                                "'#{timestamp.to_s}'"
                        else
                                "'#{date.to_s}'"
                        end
                end