select subject_id, subject_name, sort, create_at, update_at, del_flag from mall_subject_class and subject_id = #{subjectId} and subject_name like concat('%', #{subjectName}, '%') and sort = #{sort} and create_at = #{createAt} and update_at = #{updateAt} and del_flag = #{delFlag} where subject_id = #{subjectId} insert into mall_subject_class subject_id, subject_name, sort, create_at, update_at, del_flag, #{subjectId}, #{subjectName}, #{sort}, #{createAt}, #{updateAt}, #{delFlag}, update mall_subject_class subject_name = #{subjectName}, sort = #{sort}, create_at = #{createAt}, update_at = #{updateAt}, del_flag = #{delFlag}, where subject_id = #{subjectId} update mall_subject_class set del_flag = '1' where subject_id = #{subjectId} update mall_subject_class set del_flag = '1' where subject_id in #{subjectId} select subject_id subjectId, subject_name subjectName from mall_subject_class where del_flag = '0' order by sort asc