CREATE TABLE `cnarea_2020` (
`id` mediumint(7) unsigned NOT NULL AUTO_INCREMENT,
`level` tinyint(1) unsigned NOT NULL COMMENT '层级',
`parent_code` bigint(14) unsigned NOT NULL DEFAULT '0' COMMENT '父级行政代码',
`area_code` bigint(14) unsigned NOT NULL DEFAULT '0' COMMENT '行政代码',
`zip_code` mediumint(6) unsigned zerofill NOT NULL DEFAULT '000000' COMMENT '邮政编码',
`city_code` char(6) NOT NULL DEFAULT '' COMMENT '区号',
`name` varchar(50) NOT NULL DEFAULT '' COMMENT '名称',
`short_name` varcha
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