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GATE CSE 2018

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Dec 24, 2021
3:29

Planning to take coaching on Unacademy http://bit.ly/gate_unacademy or https://unacademy.com/ here is a code for 10% off PLUS1BPK1 Telegram Notification Group link:- https://t.me/joinchat/X5egW_cvdt9kMGY1 Telegram discussion Group link:- https://t.me/joinchat/VCyGUmVq8RNkMzhl Downloads resources from here https://education4fun.com/gate-cse/ MCQ (Single Correct Answer) GATE CSE 2018 Consider the following two tables and four queries in SQL. Book (isbn, bname), Stock (isbn, copies) Query 1SELECT B.isbn, S.copies FROM Book B INNER JOIN Stock S ON B.isbn = S.isbn; Query 2: SELECT B.isbn, S.copies FROM B B LEFT OUTER JOIN Stock S ON B.isbn = S.isbn; Query 3: SELECT B.isbn, S.copies FROM Book B RIGHT OUTER JOIN Stock S ON B.isbn = S.isbn; Query 4: SELECT B.isbn, S.copies FROM B B FULL OUTER JOIN Stock S ON B.isbn = S.isbn; Which one of the queries above is certain to have an output that is a superset of the outputs of the other three queries?(A) Query 1(B) Query 2(C) Query 3(D) Query 4

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