SQL query for finding the longest name and shortest name in a table

Question

I have a table with one of the columns is of type varchar(city). and want to find the longest and shortest of values stored in that column.

select a.city, a.city         


        

Answer 1

select * from (select city,length(city)from station group by city having length(city) in ((select min(length(city))from station))order by city) where rownum<2
UNION
select * from (select city,length(city)from station group by city having length(city) in ((select max(length(city))from station))order by city) where rownum<2;