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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What does the following query return?
SELECT ROUND(123.456, 1) AS rounded_value FROM dual;

A) 123.5
B) 123.45
C) 124
D) 123.4

2. Which SQL function can be used to replace NULL values with a specified value?

A) COALESCE
B) NVL
C) ISNULL
D) REPLACE

3. Which SQL clause is used to specify the source table in a query?

A) WHERE
B) FROM
C) GROUP BY
D) SELECT

4. What does the NEXTVAL pseudocolumn do in SQL?

A) Deletes the sequence from the database
B) Retrieves the current value of a sequence without incrementing it
C) Retrieves the next value in a sequence and increments the sequence
D) Resets the sequence to its starting value

5. Which SQLPlus command displays defined substitution variable values?

A) SHOW
B) VERIFY
C) DEFINE
D) LIST

Solutions: