Python爬虫数据应该怎么处理答:1.4、设置变量 substring_index()字符串截取函数用法 set @address='中国-山东省-聊城市-莘县';select substring_index(@address,'-',1) as china,substring_index(substring_index(@address,'-',2),'-',-1) as province,substring_index(substring_index(@address,'-',3),'-',-1) as cit...