Question

Based upon the contents of the BOOKS tables, which of the following SQL statements will return the number of different publishers represented in the table?

A) SELECT COUNT(DISTINCT Publisher)
B) SELECT DISTINCT COUNT(Publisher)
C) SELECT COUNT(*) FROM BOOKS GROUP BY Publisher
D) SELECT UNIQUE COUNT(Publisher)

Answer 1

The correct SQL statement to count the number of different publishers represented in the table is SELECT COUNT(DISTINCT Publisher). thus, the correct option is A).

Step-by-step explanation:

The correct SQL statement to return the number of different publishers represented in the BOOKS table is option A) SELECT COUNT(DISTINCT Publisher).

The COUNT(DISTINCT Publisher) function will count the number of unique publishers in the table. By using the DISTINCT keyword, it ensures that duplicate publishers are not counted more than once.

For example, the statement SELECT COUNT(DISTINCT Publisher) FROM BOOKS will return the number of different publishers in the BOOKS table.