SQL
October 4, 2023SQL
October 4, 2023SQL
| Question 35 |
Consider the following database table named top_scorer.
SELECT ta.player FROM top_scorer AS ta
WHERE ta.goals > ALL (SELECT tb.goals
FROM top_scorer AS tb
WHERE tb.country = 'Spain')
AND ta.goals > ANY (SELECT tc.goals
FROM top_scorer AS tc
WHERE tc.country = 'Germany') The number of tuples returned by the above SQL query is _____.
| 7 | |
| 8 | |
| 9 | |
| 10 |
Question 35 Explanation:
In the given database table top_scorer no players are there from ‘Spain’.
So, the query (1) results 0 and ALL (empty) is always TRUE.
The query (2) selects the goals of the players those who are belongs to ‘Germany’.
So, it results in ANY (16, 14, 11, 10).
So, the outer most query results the player names from top_scorer, who have more goals.
Since, the minimum goal by the ‘Germany’ player is 10, it returns the following 7 rows.
Correct Answer: A
Question 35 Explanation:
In the given database table top_scorer no players are there from ‘Spain’.
So, the query (1) results 0 and ALL (empty) is always TRUE.
The query (2) selects the goals of the players those who are belongs to ‘Germany’.
So, it results in ANY (16, 14, 11, 10).
So, the outer most query results the player names from top_scorer, who have more goals.
Since, the minimum goal by the ‘Germany’ player is 10, it returns the following 7 rows.