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

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Felix

7 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.

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Gayla

7 months ago

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

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Tracey

7 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.

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Jutta

7 months ago

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

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Lai

6 months ago

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

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Teddy

6 months ago

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

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Pilar

6 months ago

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

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Virgina

6 months ago

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

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Nicolette

6 months ago

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

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Colby

6 months ago

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

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Coral

7 months ago

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

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Paola

8 months ago

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

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Harrison

8 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?

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Clement

7 months ago

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

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Janella

7 months ago

I agree, option A is the most straightforward choice.

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Becky

8 months ago

I think the correct answer is A.

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