Oracle Exam 1Z0-071 Topic 4 Question 103 Discussion

Actual exam question for Oracle's 1Z0-071 exam

Question #: 103
Topic #: 4

[All 1Z0-071 Questions]

Examine the description of the EMPLOYEES table:

Which statement will execute successfully, returning distinct employees with non-null first names?

ASELECT DISTINCT * FROM employees WHERE first_ name IS NOT NULL;

BSELECT first_ name, DISTNCT last_ name FROM employees WHERE first_ name IS NOT NULL;

CSELECT Distinct * FROM employees WHERE first_ name < > NULL;

DSELECT first_ name, DISTINCT last_ name FROM employees WHERE first_ name < > NULL;

Show Suggested Answer

Suggested Answer: A

by Helga at Sep 18, 2024, 07:01 PM

Limited Time Offer

25%

Off

Get Premium 1Z0-071 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Felix

8 months ago

D tries to be fancy, but it just ends up being a mess. Stick to the basics, people. A is the winner here.

upvoted 0 times

...

Gayla

9 months ago

Hah, C is hilarious! Comparing first_name to NULL? Really? This is a test, not a comedy routine.

upvoted 0 times

...

Tracey

9 months ago

I'm not sure, but I think option C might also work. It uses the not equal operator to check for non-null values.

upvoted 0 times

...

Jutta

9 months ago

B is just confusing. DISTINCT should be applied to the entire row, not just the last name. This is a rookie mistake.

upvoted 0 times

Lai

8 months ago

I agree, B is definitely confusing. DISTINCT should be applied to the entire row.

upvoted 0 times

...

Teddy

8 months ago

C) SELECT Distinct * FROM employees WHERE first_ name < > NULL;

upvoted 0 times

...

Pilar

8 months ago

D) SELECT first_name, DISTINCT last_name FROM employees WHERE first_name <> NULL;

upvoted 0 times

...

Virgina

8 months ago

I agree, B is definitely confusing. It should be applied to the entire row.

upvoted 0 times

...

Nicolette

8 months ago

C) SELECT Distinct * FROM employees WHERE first_name <> NULL;

upvoted 0 times

...

Colby

8 months ago

A) SELECT DISTINCT * FROM employees WHERE first_ name IS NOT NULL;

upvoted 0 times

...

Coral

8 months ago

A) SELECT DISTINCT * FROM employees WHERE first_name IS NOT NULL;

upvoted 0 times

...

Paola

9 months ago

I agree with you, Becky. Option A makes sense because it selects distinct employees with non-null first names.

upvoted 0 times

...

Harrison

9 months ago

Option A is the way to go! It's clear and to the point. Why complicate things with extra columns or unnecessary DISTINCT statements?

upvoted 0 times

Clement

9 months ago

Yeah, no need to overcomplicate things. Option A does the job efficiently.

upvoted 0 times

...

Janella

9 months ago

I agree, option A is the most straightforward choice.

upvoted 0 times

...

Becky

9 months ago

I think the correct answer is A.

upvoted 0 times

...