SQL Quiz | Software Testing Material

Welcome to your SQL Quiz. This quiz consists of 30 multiple-choice questions. There is no negative marking in this. Click on NEXT button to Start this Java Quiz.

1. With SQL, how do you select all the columns from a table named "Employees"?

SELECT FROM Employees

SELECT * Employees

SELECT * FROM Employees

SELECT [all] FROM Employees

2. Which of the following is not a Data Definition Language (DDL) statement?

ALTER

CREATE

RENAME

UPDATE

3. Which SQL statement is used to remove rows from a table?

DELETE

DROP

ELIMINATE

REMOVE

4. Which statement is correct

To sort in ascending or descending order we can use the keywords ASC or DESC respectively

To sort in ascending or descending order we can use the keywords DESC or ASC respectively

To sort in ascending or descending order we can use the keywords AESC or DSC respectively

To sort in ascending or descending order we can use the keywords DSC or AESC respectively

5. The table rows are also known as

Records

Attributes

Fields

None of the above

6. The result of a SELECT statement can contain duplicate rows

True

False

7. Which SQL statement is used to modify the existing records in a table?

UPDATE

MODIFY

EDIT

SAVE

None of the above

8. Which SQL keyword is used to sort the data in ascending or descending order, based on one or more columns

SORT

SORT BY

ORDER

ORDER BY

9. The UNION operator is used to

Combine the result-set of no more than two SELECT statements and must have the same number of columns

Combine the result-set of no more than two SELECT statements and doesn't have the same number of columns

Combine the result-set of two or more SELECT statements and must have the same number of columns

Combine the result-set of two or more SELECT statements and doesn't have the same number of columns

10. Which SQL statement is used to delete complete data from an existing table?

DELETE

REMOVE

TRUNCATE

None of the above

11. Which SQL statement is used to return only different values?

SELECT DIFFERENT ColumnName FROM TableName;

SELECT DISTINCT ColumnName FROM TableName;

SELECT UNIQUE ColumnName FROM TableName;

None of the above

12. Which SQL keyword you use to merge two tables based on a matching column?

AND

ATTACH

JOIN

MERGE

13. Which SQL statement is used to extract data from a database?

EXTRACT

GET

SELECT

None of the above

14. Which function returns the difference between two dates

DATEDIFFERENCE()

DATEDIFF()

DATESUB()

DATESUBTRACT()

15. The MIN() function returns the smallest value of the selected column and The MAX() function returns the largest value of the selected column

True

False

16. What does SQL stand for?

Structured Query Language

Structured Queries Language

Structured Question Language

None of the above

17. The OR operator displays a record if any of the conditions separated by OR is TRUE

True

False

18. Which SQL statement is used to delete complete data from an existing table & table structure from the database?

DROP

DELETE

TRUNCATE

None of the above

19. The AND operator displays a record if all the conditions separated by AND are TRUE

True

False

20. Which SQL statement is used to insert new rows of data to a table in a database

ADD

APPEND

ADJUST

INSERT

21. Which of the following is not a RDBMS?

MySQL

MongoDB

NexusDB

PostgreSQL

22. The table columns are also known as

Records

Attributes

Fields

None of the above

23. With SQL, how do you select a column named "FirstName" from a table named "Employees"?

SELECT * FROM Employees

SELECT FirstName FROM Employees

SELECT FROM Employees.FirstName

SELECT * FirstName FROM Employees

24. What is the keyword you use to group the result by a column's values?

GROUP BY

ORDER BY

25. Which type of database management system represents relations using tables?

Hierachical DBMS

Object Oriented DBMS

Relational DBMS

None of the above

26. Which of the following keyword you use to modify the existing value in an UPDATE query?

EDIT

UPDATE

SET

VALUE

27. Subqueries can be nested multiple times

True

False

28. Which of the following is not a part of SQL

Data Control Language

Data Definition Language

Data Manipulation Language

Data Structured Language

29. A NULL value is different than a zero value or a field that contains spaces

True

False

30. Which of the following is not an SQL Aggregate function

AVG()

ABS()

COUNT()

SUM()

SQL Quiz | Software Testing Material

Rajkumar

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