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select LENGTH(city) as `length`
from table station
order by length asc, city asc limit 1)
union
(select length(city) as `length`
from table station
order by length desc, city asc limit 1);
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Weather Observation Station 5
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select LENGTH(city) as `length` from table station order by length asc, city asc limit 1) union (select length(city) as `length` from table station order by length desc, city asc limit 1);