select id, user_id, md_id, cretim from pos_collect and user_id = #{userId} and md_id = #{mdId} order by id desc where id = #{id} insert into pos_collect user_id, md_id, cretim, #{userId}, #{mdId}, #{cretim}, update pos_collect user_id = #{userId}, md_id = #{mdId}, cretim = #{cretim}, where id = #{id} delete from pos_collect where id = #{id} delete from pos_collect where id in #{id}