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ISRO | ISRO CS 2017 | Question 11
Consider the schema Sailors(sid, sname, rating, age) with the following data
| sid | sname | rating | age |
|---|---|---|---|
| 22 | Dustin | 7 | 45 |
| 29 | Borg | 1 | 33 |
| 31 | Pathy | 8 | 55 |
| 32 | Robert | 8 | 25 |
| 58 | Raghu | 10 | 17 |
| 64 | Herald | 7 | 35 |
| 71 | Vishnu | 10 | 16 |
| 74 | King | 9 | 35 |
| 85 | Archer | 3 | 26 |
| 84 | Bob | 3 | 64 |
| 96 | Flinch | 3 | 17 |
For the query
SELECT S.rating, AVG(S.age) AS avgage FROM Sailors S Where S.age >= 18 GROUP BY S.rating HAVING 1 < (SELECT COUNT(*) FROM Sailors S2 where S.rating = S2.rating)
The number of rows returned is
(A)
6
(B)
5
(C)
4
(D)
3
Answer
Please comment below if you find anything wrong in the above post
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