Functions, Joins & Set Operators MCQs

14 MCQs  — Oracle: Introduction & SQL Overview MCQs  (Page 2 of 2)

Attempt Functions, Joins & Set Operators Quiz
A CROSS JOIN returns:
Only matching rows
Only unmatched rows
The Cartesian product of both tables
The first table only
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What is a self join?
Joining a table to a view
Joining without any condition
Joining two databases
Joining a table to itself, such as employees to their managers
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Which set operator returns rows from the first query that are not in the second?
EXCEPT_ALL
SUBTRACT
MINUS
DIFFERENCE
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What is ROWID in Oracle?
A sequential row counter
A user-defined primary key
A pseudo-column that holds the physical address of a row
The row's checksum
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Word of the Day
02 Nov
Obligation
an act or course of action to which a person is morally or legally bound; a duty or commitment.
احسان، فرض، ذمہ داری

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