परिणामों की सफाई

SELECT
  -- Replace the nulls in the columns with meaningful text
  ___(Country, ___) AS Country,
  ___(Gender, ___) AS Gender,
  COUNT(*) AS Awards
FROM Summer_Medals
WHERE
  Year = 2004
  AND Medal = 'Gold'
  AND Country IN ('DEN', 'NOR', 'SWE')
GROUP BY ROLLUP(Country, Gender)
ORDER BY Country ASC, Gender ASC;