SELECT standby_id, line_id, stand_no, roll_no, roll_type, position, CASE WHEN roll_type = 'BR' AND position = 'UP' THEN '上支撑辊' WHEN roll_type = 'WR' AND position = 'UP' THEN '上工作辊' WHEN roll_type = 'WR' AND position = 'DOWN' THEN '下工作辊' WHEN roll_type = 'BR' AND position = 'DOWN' THEN '下支撑辊' ELSE CONCAT(position, roll_type) END AS position_label, diameter, roughness, crown, ready_time, remark, create_time FROM mes_roll_standby WHERE del_flag = 0 AND stand_no = #{standNo} AND line_id = #{lineId} ORDER BY FIELD(roll_type, 'BR', 'WR', 'WR', 'BR'), FIELD(position, 'UP', 'UP', 'DOWN', 'DOWN') UPDATE mes_roll_standby SET del_flag = 1 WHERE del_flag = 0 AND stand_no = #{standNo} AND line_id = #{lineId}