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Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?()

发布日期:2022-05-15

Evaluate these two SQL statements: SELECT last_nam...
A

The two statements produce identical results.

B

The second statement returns a syntax error.

C

There is no need to specify DESC because the results are sorted in descending order by default.

D

The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.

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此试题出现在

Oracle认证考试

1Z0-007

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