全国省、市县、区三级联动数据 INSERT INTO `demo_province` (`CODE`, `PROVINCENAME`) VALUES ('110000', '北京市'); INSERT INTO `demo_province` (`CODE`, `PROVINCENAME`) VALUES ('120000', '天津市'); INSERT INTO `demo_province` (`CODE`, `PROVINCENAME`) VALUES ('130000', '河北省'); INSERT INTO `demo_province` (`CODE`, `PROVINCENA