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Which two statements are true regarding the ORDER BY clause? (Choose two)
A. The sort is in ascending by order by default.
B. The sort is in descending order by default.
C. The ORDER BY clause must precede the WHERE clause.
D. The ORDER BY clause is executed on the client side.
E. The ORDER BY clause comes last in the SELECT statement.
F. The ORDER BY clause is executed first in the query execution.
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Answer: A, E
Explanation:
The ORDER BY clause does sort data in ascending order by default. And the ORDER BY clause comes last in
the SELECT statement: after FROM or WHERE or GROUP BY clause.
Incorrect Answers
B: The ORDER BY clause does sort data in ascending, not descending order, by default.
C: The ORDER BY clause must be after the WHERE clause in the SQL statement.
D: The ORDER BY clause is executed on the server side as the whole SQL statement is.
F: The ORDER BY clause is executed last in the query execution, after results are limited with the WHERE
and GROUP BY clause conditions.
OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 56-61
Chapter 2: Limiting, Sorting, and Manipulating Return Data