SELECT * FROM sys_suggestion WHERE id_ = #{id} SELECT * FROM sys_suggestion ORDER BY id_ INSERT INTO sys_suggestion (id_,mobile_no_,title_,content_,user_id_,create_time_,client_type_) VALUES(#{id},#{mobileNo},#{title},#{content},#{userId},now(),#{clientType}) UPDATE sys_suggestion client_type_ = #{clientType}, user_id_ = #{userId}, title_ = #{title}, content_ = #{content}, mobile_no_ = #{mobileNo}, WHERE id_ = #{id} DELETE FROM sys_suggestion WHERE id_ = #{id} SELECT ss.*,CASE WHEN su.real_name_ IS NULL THEN su.username_ ELSE su.real_name_ END username_ FROM sys_suggestion ss LEFT JOIN sys_user su ON su.id_ = ss.user_id_ ORDER BY ss.id_ DESC SELECT COUNT(*) FROM sys_suggestion