select id, cretim, user_id, content from sys_feedback and cretim = #{cretim} and user_id = #{userId} and content = #{content} order by id desc select a.id, a.cretim, a.user_id, a.content, b.id as sub_id, b.cretim as sub_cretim, b.fe_id as sub_fe_id, b.content as sub_content from sys_feedback a left join sys_response b on b.fe_id = a.id where a.id = #{id} insert into sys_feedback cretim, user_id, content, #{cretim}, #{userId}, #{content}, update sys_feedback cretim = #{cretim}, user_id = #{userId}, content = #{content}, where id = #{id} delete from sys_feedback where id = #{id} delete from sys_feedback where id in #{id} delete from sys_response where fe_id in #{feId} delete from sys_response where fe_id = #{feId} insert into sys_response( id, cretim, fe_id, content) values ( #{item.id}, #{item.cretim}, #{item.feId}, #{item.content})