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Oracle

1Z0-071 · Question #123

Which three statements are true regarding subqueries? (Choose three.)

The correct answer is A. The ORDER BY Clause can be used in a subquery. B. A subquery can be used in the FROM clause of a SELECT statement. D. A subquery can be placed in a WHERE clause, a GROUP BY clause, or a HAVING clause. See the full explanation below for the reasoning.

Question

Which three statements are true regarding subqueries? (Choose three.)

Options

  • AThe ORDER BY Clause can be used in a subquery.
  • BA subquery can be used in the FROM clause of a SELECT statement.
  • CIf a subquery returns NULL, the main query may still return rows.
  • DA subquery can be placed in a WHERE clause, a GROUP BY clause, or a HAVING clause.
  • ELogical operators, such as AND, OR and NOT, cannot be used in the WHERE clause of a

How the community answered

(17 responses)
  • A
    71% (12)
  • C
    18% (3)
  • E
    12% (2)

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