表结构如下： CREATETABLE"public"."core_city_code"( "id"int4NOTNULL, "parent_id"int4NOTNULL, "name"varchar(50)COLLATE"pg_catalog"."default"NOTNULL, "merger_name"varchar(500)COLLATE"pg_catalog"."default", "short_name"varchar(50)COLLATE"pg_catalog"."default", "merger_short_nam