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with cte as(
select city , length(city),
row_number() over(order by length(city), city) rnk_min,
row_number() over(order by length(city) desc, city desc) rnk_max
from station
order by length(city), city)
select city, length(city) from cte
where rnk_min = 1 or rnk_max = 1
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Weather Observation Station 5
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with cte as( select city , length(city), row_number() over(order by length(city), city) rnk_min, row_number() over(order by length(city) desc, city desc) rnk_max from station order by length(city), city) select city, length(city) from cte where rnk_min = 1 or rnk_max = 1