Is there a way to give a subquery an alias in Oracle 11g SQL?
- by Matt Pascoe
Is there a way to give a subquery in Oracle 11g an alias like:
select *
from
(select client_ref_id, request from some_table where message_type = 1) abc,
(select client_ref_id, response from some_table where message_type = 2) defg
where
abc.client_ref_id = def.client_ref_id;
Otherwise is there a way to join the two subqueries based on the client_ref_id. I realize there is a self join, but on the database I am running on a self join can take up to 5 min to complete (there is some extra logic in the actual query I am running but I have determined the self join is what is causing the issue). The individual subqueries only take a few seconds to complete by them selves. The self join query looks something like:
select st.request, st1.request
from
some_table st, some_table st1
where
st.client_ref_id = st1.client_ref_id;
