全国行政区

http://www.stats.gov.cn/tjsj/tjbz/tjyqhdmhcxhfdm/

https://xingzhengquhua.51240.com/

http://www.mca.gov.cn/article/sj/xzqh//1980/

https://www.qqzeng.com/article/area.html

行政边界查询
https://lbs.amap.com/api/javascript-api/example/district-search/draw-district-boundaries/

https://blog.csdn.net/ooiuy450/article/details/69666368

https://lbs.amap.com/api/javascript-api/download

https://gitee.com/zwh_9527/ChinaProvince
https://gitee.com/xusimin/area/blob/master/area.sql
https://gitee.com/vZoning/city/tree/master/php

SELECT * from t_area where code like '50%00' and (code != '500000' or code in('110000','810000','500000')) ;

SELECT * from t_area where code like '5000%' and code != '500000' or (code like '500%' and (`code` like '1201%' 
or `code` like '1101%'
or `code` like '5001%'

));