SELECT * FROM trail_position WHERE trail_id = #{trailId} SELECT * FROM trail_position WHERE id = #{id} SELECT * FROM trail_position SELECT * FROM trail_position WHERE snow_machine_id IS NULL SELECT * FROM trail_position WHERE snow_machine_id IS NOT NULL INSERT INTO trail_position (trail_id, position, name) VALUES (#{trailId}, #{position}, #{name}) UPDATE trail_position SET trail_id = #{trailId}, position = #{position}, name = #{name} WHERE id = #{id} UPDATE trail_position SET snow_machine_status = 0, snow_machine_id = NULL WHERE id = #{id} UPDATE trail_position SET snow_machine_status = #{snowMachineStatus}, snow_machine_id = #{snowMachineId} WHERE id = #{id} SELECT snow_machine_id FROM trail_position WHERE id IN #{id}