1.查询某节点下所有后代节点(包括各级父节点) 1 // 查询id为101的所有后代节点,包含101在内的各级父节点 2 select t.* from SYS_ORG t start with id = '101' connect by parent_id = prior id 2.查询某节点下所有后代节点(不包含各级父节点) 1 select t.* 2 from SYS_ORG t 3 where not exists (select 1 from SYS_ORG s where s.
原地址:http://www.cnblogs.com/twinsclover/archive/2012/04/26/2471704.html 序言 之前用python爬取网页的时候,一直用的是regex或者自带的库sgmllib里的SGMLParser.但是遇到复杂一点的情况时,SGMLParser往往就不那么给力了!(哈,难道说我 too native了?毕竟beautifulSoup是继承sgmlparser的么~)所以,我寻寻觅觅寻寻觅觅,发现了BeautifulSoup这么个玩意.Bea
BeautifulSoup是一个专门用于解析html/xml的库.官网:http://www.crummy.com/software/BeautifulSoup/ 说明,BS有了4.x的版本了.官方说: Beautiful Soup 3 has been replaced by Beautiful Soup 4. You may be looking for the Beautiful Soup 4 documentation Beautiful Soup 3 only works on Pyt