9 lines
303 B
MySQL
9 lines
303 B
MySQL
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SELECT F1.carrier,
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(SELECT AVG(F2.arr_delay)
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FROM Flight_delays F2
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WHERE F1.carrier = F2.carrier
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GROUP BY F2.carrier) AS 'avg_delay'
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FROM Flight_delays F1
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WHERE F1.origin_city_name LIKE 'San Francisco%'
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GROUP BY F1.carrier
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ORDER BY avg_delay ASC;
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