SQL Server Basic Data Manipulation – Beginner-Level Quiz

SQL Server Basic Data Manipulation - Beginner Level Quiz

This quiz tests your knowledge of basic data manipulation in SQL Server. It covers basic operations such as inserting, updating, deleting data, and using basic functions. Each question is multiple-choice, with one correct answer.

1 / 20

What does the SQL statement SELECT AVG(salary) FROM employees;do?

Calculates the total salary of all employees

Calculates the average salary of all employees

Finds the highest salary among employees

Finds the lowest salary among employees

2 / 20

How do you retrieve records where a column value is not null?

SELECT * FROM table_name WHERE column_name IS NOT ZERO;

SELECT * FROM table_name WHERE column_name IS NOT NULL;

SELECT * FROM table_name WHERE column_name IS NOT EMPTY;

SELECT * FROM table_name WHERE column_name IS NOT BLANK;

3 / 20

How do you delete a record from a table?

ERASE FROM table_name WHERE condition;

DELETE FROM table_name WHERE condition;

REMOVE FROM table_name WHERE condition;

DELETE FROM table_name WHERE condition;

4 / 20

Which of the following is the correct syntax to update a record in a table?

ALTER table_name SET column1 = value1 WHERE condition;

CHANGE table_name SET column1 = value1 WHERE condition;

MODIFY table_name SET column1 = value1 WHERE condition;

UPDATE table_name SET column1 = value1 WHERE condition;

5 / 20

What is the purpose of the WHERE clause in SQL Server?

To specify the columns to be displayed

To filter records based on a condition

To sort the results

To specify the table to be queried

6 / 20

How do you change the name of a column in SQL Server?

A) RENAME COLUMN old_name TO new_name;
B) ALTER COLUMN old_name RENAME TO new_name;
C) EXEC sp_rename ‘table_name.old_name’, ‘new_name’, ‘COLUMN’;
D) MODIFY COLUMN old_name TO new_name;

MODIFY COLUMN old_name TO new_name;

RENAME COLUMN old_name TO new_name;

ALTER COLUMN old_name RENAME TO new_name;

EXEC sp_rename ‘table_name.old_name’, ‘new_name’, ‘COLUMN’;

7 / 20

Which SQL statement is used to create a view?

A) CREATE VIEW view_name AS SELECT column1, column2 FROM table_name;
B) ADD VIEW view_name AS SELECT column1, column2 FROM table_name;
C) NEW VIEW view_name AS SELECT column1, column2 FROM table_name;
D) INSERT VIEW view_name AS SELECT column1, column2 FROM table_name;

CREATE VIEW view_name AS SELECT column1, column2 FROM table_name;

INSERT VIEW view_name AS SELECT column1, column2 FROM table_name;

ADD VIEW view_name AS SELECT column1, column2 FROM table_name;

NEW VIEW view_name AS SELECT column1, column2 FROM table_name;

8 / 20

What is the purpose of the HAVING clause?

To specify the columns to be displayed

To filter records before the GROUP BY clause

To sort the results

To filter records after the GROUP BY clause

9 / 20

How do you concatenate two strings in SQL Server?

string1 || string2

string1 + string2

CONCAT(string1, string2)

string1 & string2

10 / 20

How do you remove a column from a table?

REMOVE COLUMN column_name;

ALTER TABLE table_name DROP COLUMN column_name;

DROP COLUMN column_name;

DELETE COLUMN column_name;

11 / 20

What does the SUM() function do?

Adds up all the values in a column

Counts the number of rows in a table

Finds the average value in a column

Finds the highest value in a column

12 / 20

What is the correct syntax for inserting multiple rows into a table?

INSERT INTO table_name (value1, value2), (value3, value4);

ADD INTO table_name VALUES (value1, value2), (value3, value4);

INSERT INTO table_name VALUES (value1, value2) AND (value3, value4);

INSERT INTO table_name VALUES (value1, value2), (value3, value4);

13 / 20

Which SQL Server clause is used to sort the result set?

ORDER BY

GROUP BY

ARRANGE BY

SORT BY

14 / 20

What does the IS NULL condition do?

Checks if a column is empty

Checks if a column has no value

Checks if a column is zero

Checks if a column has a value

15 / 20

What does the TRUNCATE statement do?

Deletes the table structure

Deletes all rows from a table and can be rolled back

Deletes all rows from a table and cannot be rolled back

Deletes specific rows from a table

16 / 20

How do you add a new column to an existing table?

MODIFY TABLE table_name ADD column_name data_type;

ADD COLUMN column_name data_type;

ALTER TABLE table_name ADD column_name data_type;

INSERT COLUMN column_name data_type;

17 / 20

What does the LEN() function do?

Returns the length of a table

Returns the length of a string

Returns the length of a row

Returns the length of a column

18 / 20

Which function is used to find the minimum value in a column?

A) MIN()
B) LEAST()
C) LOWEST()
D) SMALLEST()

LOWEST()

LEAST()

MIN()

SMALLEST()

19 / 20

How do you rename a table in SQL Server?

EXEC sp_rename ‘old_name’, ‘new_name’;

ALTER TABLE old_name RENAME TO new_name;

RENAME TABLE old_name TO new_name;

MODIFY TABLE old_name TO new_name;

20 / 20

What does the COALESCE() function do?

Converts a value to a different data type

Returns the first non-null value in a list

Combines multiple columns into one

Splits a string into multiple parts

Your score is

The average score is 49%

Use this beginner-level quiz on fundamental SQL Server basic data manipulation to improve your data manipulation skills. This quiz covers fundamental functions like COUNT, SUM, and AVG and important SQL operations like INSERT, UPDATE, and DELETE.

The quiz is ideal for beginners who want to solidify their understanding of SQL Server data manipulation techniques. Our carefully selected multiple-choice questions will help you test your knowledge and improve your skills.

All the best.