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Exam 1z0-051 topic 1 question 69 discussion

Actual exam question from Oracle's 1z0-051
Question #: 69
Topic #: 1
[All 1z0-051 Questions]

See the Exhibit and examine the structure of the PROMOTIONS table:
Exhibit:

Using the PROMOTIONS table, you need to find out the average cost for all promos in the range $0-2000 and $2000-5000 in category A.
You issue the following SQL statements:
Exhibit:

What would be the outcome?

  • A. It generates an error because multiple conditions cannot be specified for the WHEN clause
  • B. It executes successfully and gives the required result
  • C. It generates an error because CASE cannot be used with group functions
  • D. It generates an error because NULL cannot be specified as a return value
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
CASE Expression -
Facilitates conditional inquiries by doing the work of an
IF-THEN-ELSE statement:
CASE expr WHEN comparison_expr1 THEN return_expr1
[WHEN comparison_expr2 THEN return_expr2
WHEN comparison_exprn THEN return_exprn
ELSE else_expr]
END
by [deleted] at April 4, 2025, 6:57 a.m.

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