Answered: SELECT CName, cPhoneNo FROM CUSTOMER…

SELECT CName, cPhoneNo FROM CUSTOMER WHERE CNo IN (SELECT CNo FROM BOOKING WHERE rNo IN (SELECT rNo FROM ROOM WHERE type = 'Deluxe')); i. Describe the expected output of the query.

A Guide to SQL

9th Edition

ISBN:9781111527273

Author:Philip J. Pratt

Publisher:Philip J. Pratt

Chapter5: Multiple-table Queries

Section: Chapter Questions

Problem 5SCG: Repeat Exercise 4, but this time use the EXISTS operator in your query.

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Given the following subquěry:
SELECT CName, cPhoneNo FROM CUSTOMER
WHERE CNo IN (SELECT cNo FROM BOOKING
WHERE rNo IN (SELECT rNo FROM ROOM
WHERE type 'Deluxe'));
i.
Describe the expected output of the query.
i.
Rewrite the query using join method.
d.

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