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WITH OrderValue AS (
SELECT
LAT_N,
ROW_NUMBER() OVER (ORDER BY LAT_N) AS row_num,
COUNT(*) OVER () AS total_count
FROM STATION
)
SELECT
ROUND(AVG(LAT_N),4) AS median
FROM
OrderValue
WHERE
row_num IN ((total_count + 1) / 2, (total_count + 2) / 2);
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Weather Observation Station 20
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WITH OrderValue AS ( SELECT LAT_N, ROW_NUMBER() OVER (ORDER BY LAT_N) AS row_num, COUNT(*) OVER () AS total_count FROM STATION ) SELECT ROUND(AVG(LAT_N),4) AS median FROM OrderValue WHERE row_num IN ((total_count + 1) / 2, (total_count + 2) / 2);