Run queries from external files as subqueries

[Sha Liu]

Hi,
While working on some complex queries with multiple level of subqueries, I'm 
wonder if it is possible in Hive to refactor these subqueries into different 
files and instruct the enclosing query to execute these files. This way these 
subqueries can potentially be reused by other questions or just run by 
themselves.
Thanks,Sha Liu