delete_records

# File activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb, line 84
        def delete_records(records)
          if sql = @reflection.options[:delete_sql]
            records.each { |record| @owner.connection.delete(interpolate_sql(sql, record)) }
          else
            ids = quoted_record_ids(records)
            sql = "DELETE FROM #{@owner.connection.quote_table_name @reflection.options[:join_table]} WHERE #{@reflection.primary_key_name} = #{owner_quoted_id} AND #{@reflection.association_foreign_key} IN (#{ids})"
            @owner.connection.delete(sql)
          end
        end