Joins in SQL and Python

Joins in SQL and Python

University

20 Qs

quiz-placeholder

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Joins in SQL and Python

Joins in SQL and Python

Assessment

Quiz

Computers

University

Hard

Created by

Abdullah Muhammad 201-801-271

Used 1+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of join returns all rows from the left table and matching rows from the right table, with NULLs in place where there is no match?

INNER JOIN

LEFT JOIN

RIGHT JOIN

FULL JOIN

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which join type returns only the rows where there is a match in both tables?

LEFT JOIN

RIGHT JOIN

FULL JOIN

INNER JOIN

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In SQL, which join type returns all rows when there is a match in either left or right table?

INNER JOIN

LEFT JOIN

RIGHT JOIN

FULL JOIN

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main difference between a LEFT JOIN and a RIGHT JOIN?

LEFT JOIN returns unmatched rows from the right table, RIGHT JOIN returns unmatched rows from the left table

LEFT JOIN returns unmatched rows from the left table, RIGHT JOIN returns unmatched rows from the right table

LEFT JOIN requires matching columns, RIGHT JOIN does not

There is no difference between LEFT JOIN and RIGHT JOIN

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which SQL clause is used to combine rows from two or more tables based on a related column between them?

UNION

JOIN

MERGE

CONCAT

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which join type will return unmatched rows from both the left and right tables, along with the matched rows?

INNER JOIN

LEFT JOIN

RIGHT JOIN

FULL JOIN

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What will happen if you perform an INNER JOIN on two tables with no matching rows?

All rows from both tables will be returned

No rows will be returned

Only unmatched rows will be returned

A syntax error will occur

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