使用yql过滤hacker news的信息select * from html where urlhttp://news.ycombinator.com/ andxpath/
使用yql过滤hacker news的信息
select * from html where url="http://news.ycombinator.com/" and xpath='//tr/td/a[substring(@href,1,4)="http"][@href!="http://ycombinator.com"]'
http://developer.yahoo.com/yql/console/