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