update sys_farm set farm_name = #{farm.farmName},
farm_address = #{farm.farmAddress},
farm_area = #{farm.farmArea},
slogan = #{farm.slogan},
introduce = #{farm.introduce},
picture = #{farm.picture},
position = ST_GeomFromText(${farm.position}),
update_time = #{farm.updateTime}
where id = #{farm.id}