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Question

Which of the following query finds the total rating of the sailors who have reserved boat "103"?

a.

SELECT SUM(s.rating) FROM sailors s, reserves r AND r.bid = 103;

b.

SELECT s.rating FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103

c.

c) SELECT COUNT(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103

d.

SELECT SUM(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103

Posted under DBMS

Answer: (d).SELECT SUM(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103

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Q. Which of the following query finds the total rating of the sailors who have reserved boat "103"?

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