Oracle
1Z0-071 · Question #123
1Z0-071 Question #123: Real Exam Question with Answer & Explanation
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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
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