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

In Oracle:

select * from (select city, min(length(city)) minl from station group by city order by minl, city) where rownum = 1;
select * from (select city, max(length(city)) maxl from station group by city order by maxl desc, city) where rownum = 1;