SELECT id, user_id, equipment_id, create_time,start_time,end_date FROM tb_user_equipment WHERE id = #{id} SELECT COUNT(1) FROM tb_user_equipment WHERE user_id = #{userId} AND equipment_id = #{equipmentId} AND now() > DATE_SUB(start_time, INTERVAL 15 MINUTE) AND now() < end_date INSERT INTO tb_user_equipment id, user_id, equipment_id, create_time, start_time, end_date, #{id}, #{userId}, #{equipmentId}, #{createTime}, #{startTime}, #{endDate}, UPDATE tb_user_equipment user_id = #{userId}, equipment_id = #{equipmentId}, create_time = #{createTime}, start_time = #{startTime}, end_date = #{endDate}, WHERE id = #{id} DELETE FROM tb_user_equipment WHERE id = #{id} DELETE FROM tb_user_equipment where id in #{id}