Help with inline view query

Question

Hi
I have written a query that is supposed to return the following result.
LOCATION                  YOUNGEST                    ELDEST
york                       Name                        Name
Luton                      Name                        NameI am having trouble with the INNER JOIN of the outer query. I cannot seem to match up both the YOUNGEST and ELDEST COLUMNS, only one of them. Does anyone know how I match it up to produce the appropriate result
SELECT
     res.ldes,
     a.first_name||' '||a.last_name YOUNGEST,
     a.first_name||' '||a.last_name ELDEST
FROM
  SELECT
        l.description ldes,
        MAX(a.birth_date) maxbd,
        MIN(a.birth_date) minbd
  FROM
        locations l
  INNER JOIN
        agents a
  ON
        l.location_id=a.location_id
  GROUP BY
        l.description
) res
INNER JOIN
        agents a
ON
        a.birth_date = res.maxbd  --PROBLEM IS HERE need to match up a.birth_date with res.minbd also but cannot get it
ORDER BY
        res.ldesThanks for any response

Answer 1

metzquar gave your answer.
try
with locations as(select 10 location_id,'ABC' description from dual union all
select 20,'XYZ' from dual union all
select 30,'RPF' from dual),
agents as(select 10 location_id,'IM' first_name,'ELDEST' last_name,to_date('08/08/1988','mm/dd/yyyy') birth_date from dual union all
select 20,'IM','ELDEST', to_date('08/08/1988','mm/dd/yyyy') from dual union all
select 30,'IM','ELDEST', to_date('08/08/1988','mm/dd/yyyy') from dual union all
select 10,'IM','MIDAGE', to_date('07/07/1977','mm/dd/yyyy') from dual union all
select 20,'IM','MIDAGE', to_date('07/07/1977','mm/dd/yyyy') from dual union all
select 30,'IM','MIDAGE', to_date('07/07/1977','mm/dd/yyyy') from dual union all
select 10,'IM','YOUNGEST', to_date('06/06/1966','mm/dd/yyyy') from dual union all
select 20,'IM','YOUNGEST', to_date('06/06/1966','mm/dd/yyyy') from dual union all
select 30,'IM','YOUNGEST', to_date('06/06/1966','mm/dd/yyyy') from dual)
SELECT   l.description ldes,
         MIN(a.first_name || ' ' || a.last_name)KEEP (DENSE_RANK FIRST ORDER BY a.birth_date) AS youngest,
         MIN(a.first_name || ' ' || a.last_name)KEEP (DENSE_RANK LAST ORDER BY a.birth_date) AS eldest
    FROM locations l INNER JOIN agents a ON l.location_id = a.location_id
GROUP BY l.description
ORDER BY 1;
O/P:-
LDES     YOUNGEST      ELDEST
ABC     IM YOUNGEST     IM ELDEST
RPF     IM YOUNGEST     IM ELDEST
XYZ     IM YOUNGEST     IM ELDEST