catetory as tagId) a group by a.tagId order by sum desc limit 10;

結果：

select tagId, 買粉絲unt(a.買粉絲id) as sum from (select 買粉絲id,tagId from (select * from youtube3 order by views desc limit 20) e lateral view explode(category) catetory as tagId) a group by a.tagId order by sum desc;

結果：

思路：

結果：

思路：

結果如下：

select * from youtube_category where categoryId="Music" order by ratings desc limit 10;

結果如下：

思路：

結果如下：