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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;

A) A syntax error
B) Concatenated first and last names without spaces
C) Concatenated first and last names with spaces in between
D) Only the first names of employees

2. Which type of subquery returns exactly one value?

A) Correlated subquery
B) Scalar subquery
C) Multiple-row subquery
D) Inline view

3. What is the default order of evaluation when multiple SET operators are used in a query?

A) UNION, MINUS, INTERSECT
B) INTERSECT, MINUS, UNION
C) UNION, INTERSECT, MINUS
D) INTERSECT, UNION, MINUS

4. What is the difference between UNION and UNION ALL?

A) UNION removes duplicates, while UNION ALL includes all rows, including duplicates.
B) UNION includes all rows, while UNION ALL removes duplicates.
C) UNION works with subqueries, while UNION ALL does not.
D) UNION combines columns, while UNION ALL combines rows.

5. Which type of privilege allows a user to perform administrative tasks, such as creating other users?

A) Object privilege
B) Schema privilege
C) Table privilege
D) System privilege

Solutions: