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Que. | Which of the following statements are TRUE about an SQL query? P : An SQL query can contain a HAVING clause even if it does not have a GROUP BY clause Q : An SQL query can contain a HAVING clause only if it has a GROUP BY clause R : All attributes used in the GROUP BY clause must appear in the SELECT clause S : Not all attributes used in the GROUP BY clause need to appear in the SELECT clause |
a. | P and R |
b. | P and S |
c. | Q and R |
d. | Q and S |
Answer:Q and R |
czxczC :(August 02, 2021)
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