12 lines
479 B
SQL
12 lines
479 B
SQL
SELECT CASE WHEN day_of_week = 1 THEN 'Monday'
|
|
WHEN day_of_week = 2 THEN 'Tuesday'
|
|
WHEN day_of_week = 3 THEN 'Wednesday'
|
|
WHEN day_of_week = 4 THEN 'Thursday'
|
|
WHEN day_of_week = 5 THEN 'Friday'
|
|
WHEN day_of_week = 6 THEN 'Saturday'
|
|
WHEN day_of_week = 7 THEN 'Sunday'
|
|
END AS 'day_of_week',
|
|
AVG(arr_delay)
|
|
FROM Flight_delays
|
|
GROUP BY day_of_week
|
|
ORDER BY AVG(arr_delay) DESC; |