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Exam 1z0-071 topic 1 question 188 discussion

Actual exam question from Oracle's 1z0-071
Question #: 188
Topic #: 1
[All 1z0-071 Questions]

Which statement is true about using functions in WHERE and HAVING?

  • A. Using aggregate functions in the WHERE clause requires a subquery.
  • B. Using aggregate functions in the HAVING clause requires a subquery.
  • C. Using single-row functions in the WHERE clause requires a subquery.
  • D. Using single-row functions in the HAVING clause requires a subquery.
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Suggested Answer: A 🗳️
by MooonLight at April 24, 2023, 1:39 p.m.

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ArslanAltaf
6 months ago
--B WRONG --select avg(salary) from emp group by dept_id having avg(salary) > 1000; --C WRONG --select last_name from emp where upper(last_name) like 'A%'; --D WRONG --Having is Used for Agg Functions. Single-row functions do not require grouping.
upvoted 2 times
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yaya32
9 months, 2 weeks ago
Selected Answer: A
For me A is correct.
upvoted 1 times
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c818820
10 months ago
B is the Answer.
upvoted 1 times
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jm9999
1 year, 1 month ago
Selected Answer: A
Example: select employee_id from employees where salary > (select avg(salary) from employees);
upvoted 1 times
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zouve
1 year, 4 months ago
A select EmployeeId, sum(amount) from Sales group by Employee where EmployeeId in ( select max(EmployeeId) from Employees)
upvoted 2 times
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musafir
1 year, 4 months ago
Selected Answer: B
B is correct But I think C as well is correct
upvoted 1 times
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MooonLight
1 year, 6 months ago
I thought aggregate functions cannot be used in the WHERE clause?
upvoted 4 times
Rik92
1 year, 6 months ago
You are correct. In that case you would use HAVING
upvoted 2 times
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B (20%)
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