ExamTopics Logo
Mail Us[email protected]
Menu
Oracle Discussions
exam questions

Exam 1z0-071 All Questions

View all questions & answers for the 1z0-071 exam
Go to Exam

Exam 1z0-071 topic 1 question 184 discussion

Actual exam question from Oracle's 1z0-071
Question #: 184
Topic #: 1
[All 1z0-071 Questions]

Which two are true about scalar subquery expressions?

  • A. They can return at most one row.
  • B. You must enclose them in parentheses.
  • C. You cannot correlate them with a table in the parent statement.
  • D. They can return two columns.
  • E. You can use them as a default value for a column.
Show Suggested Answer Hide Answer
Suggested Answer: AB 🗳️
by alic_alex at March 7, 2023, 8:28 p.m.

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Submit Cancel
lucemqy
1 year, 1 month ago
Selected Answer: AB
AB is the correct answer
upvoted 1 times
...
CyberP
1 year, 7 months ago
Selected Answer: AB
https://www.examtopics.com/discussions/oracle/view/20447-exam-1z0-071-topic-2-question-55-discussion/
upvoted 2 times
...
alic_alex
1 year, 9 months ago
correct A,B,C - https://docs.oracle.com/database/121/SQLRF/expressions014.htm#SQLRF52093
upvoted 1 times
karols32
1 year, 8 months ago
You can't corralate scalar subquery expression with outer query. This is the point. Main difference between scalar subquery expression and corraleted subquery expression is that the first one can't be join. If you join scalar subquery expression automaticly it changes in corraleted subquery expression. Correct: A,B.
upvoted 1 times
mrcsp
10 months, 3 weeks ago
Surely you can correlate, the alternative says you CANT, correlate is not only JOIN select * from employees e where maximum_permitted_absence < (select sum(days_absent) from absences a where a.emp_id = e.emp_id)
upvoted 1 times
...
...
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel