Discussion :: SQL Basics
- Which of the following query finds the name of the sailors who have reserved at least two boats?
|
A.
SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid ≠ r2.bid |
|
B.
SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND COUNT(r1.bid) > r2.bid |
|
C.
SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid <> r2.bid |
|
D.
All of these |
Answer : Option C
Explanation :
Explanation Not Provided
Be The First To Comment

Whatsapp
Facebook