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Exam 1z0-071 topic 1 question 63 discussion

Actual exam question from Oracle's 1z0-071
Question #: 63
Topic #: 1
[All 1z0-071 Questions]

Examine the description of the EMPLOYEES table:

Which two queries return all rows for employees whose salary is greater than the average salary in their department? (Choose two.)
A.

B.

C.

D.

E.

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Suggested Answer: BE
by Poke90 at March 8, 2023, 4:12 p.m.

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ArslanAltaf
2 months, 3 weeks ago
B & D is correct only. E is not
upvoted 1 times
ArslanAltaf
2 months, 3 weeks ago
Correction - B, D and E all worked. All tested
upvoted 1 times
ogi33
2 months, 2 weeks ago
D execute but gives no corect data
upvoted 4 times
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Poke90
1 year, 4 months ago
IN E, the column alias avg_salary from the sub query is used in the WHERE clause of the main query. Is that allowed?
upvoted 2 times
Eltelwany
1 year, 3 months ago
Yes, it is allowed. It follows from the order of the execution. Since the engine would execute the subquery first, it already knows what the alias refers to.
upvoted 3 times
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