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  1. Prepare
  2. SQL
  3. Aggregation
  4. Weather Observation Station 20
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Weather Observation Station 20

  • kaus_9
     + 1 comment

    Here's my solution ... please share your thoughts ...

    with cols as 
(
    select lat_n,
    ROW_NUMBER() OVER (ORDER BY lat_n) AS row_num
    from station
)

select round(lat_n,4)
from cols
where row_num = (select ceil(count(lat_n)/2) from station);