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Senior Passengers by Port
A maritime historian is studying elderly travelers. For each embarkation port, count how many passengers were aged 60 or older. Exclude passengers with a NULL age. Show embarked and senior_count. Sort by senior_count descending.
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Schema
passengers
| passenger_id | survived | pclass | name | sex | age | sibsp | parch | fare | embarked |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 0 | 3 | Braund, Mr. Owen Harris | male | 22 | 1 | 0 | 7.25 | S |
| 2 | 1 | 1 | Cumings, Mrs. John Bradley | female | 38 | 1 | 0 | 71.28 | C |
| 3 | 1 | 3 | Heikkinen, Miss. Laina | female | 26 | 0 | 0 | 7.93 | S |
Expected output: S | 12, C | 7, Q | 2
Hint
Concepts
SELECT WHERE GROUP BY Aggregation NULL Handling
Practise the topic: SQL practice questions · GROUP BY exercises · NULL handling practice
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