การใช้ GROUP BY และ ORDER BY อย่างมีประสิทธิภาพ

-- Extract the year and month from the date as separate elements
SELECT ___(___, date) as year,
       ___('month', ___) as month,
       COUNT(
           CASE WHEN hourlywindspeed != '0' THEN 1
           ELSE NULL
           END
       )
  FROM public_intro_redshift.coffee_county_weather
 GROUP BY year, month
 -- Add the ORDER BY fields in the proper order
 ORDER BY ___ DESC, ___ DESC;