Weather Observation Station 5

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    ------MySQL

    This will solve the problem in single query using window function

    With CTE as (SELECT city,length(city),row_number() over (order by length(city) desc,city ) as rw from Station Union SELECT city,length(city),row_number() over (order by length(city),city ) as rw from Station )

    select city,length(city) from CTE where rw =1