JOIN Operations
6 practice questionsDatabase SystemsStep-by-step solutions
Try a few
1
A LEFT JOIN returns all rows from:
A.The right table
B.The left table (plus matches)
C.Neither table
D.Only matches
2
What is the purpose of a SQL JOIN?
A.Combine rows from related tables
B.Delete every table
C.Encrypt a password
D.Start a web server
3
Which JOIN returns only the rows that have matching values in both tables?
A.LEFT JOIN
B.INNER JOIN
C.FULL OUTER JOIN
D.CROSS JOIN
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