Hive column as a subquery select

Question

I\'m trying to do something like below with Hive. How can I have a column in Hive be defined as a subquery? Is this possible in Hive?

hive -e \"                    


        

Answer 1

Correlated subqueries are not supported in Hive. How about something like this instead? (I didn't get a chance to verify this query on Hive myself)

select
    i.SearchListingID,
    count(*)
from
    (
    select
         distinct i.SearchListingID as SearchListingID 
    from 
        Impressions i
    where
        i.yyyymmdd = 20120401
    )i
    join
    calls c
    on(c.ServiceID = i.SearchListingID)
limit 10