SELECT * FROM courses_group_modify_log WHERE id_ = #{id} SELECT * FROM courses_group_modify_log ORDER BY id_ INSERT INTO courses_group_modify_log (group_id_,group_type_,operator_id_,previous_group_,current_group_,create_time_) VALUES(#{groupId},#{groupType},#{operatorId},#{previousGroup},#{currentGroup},now()) UPDATE courses_group_modify_log group_id_ = #{groupId}, group_type_ = #{groupType}, operator_id_ = #{operatorId}, previous_group_ = #{previousGroup}, current_group_ = #{currentGroup}, WHERE id_ = #{id}