SQL Server Functions – Quiz

September 16, 2024September 15, 2024 by AJ

SQL Server Functions

1 / 5

What is the difference between a stored procedure and a function?

A stored procedure returns a result set, while a function returns a single value.

A stored procedure can modify data, while a function cannot.

A stored procedure can have input parameters, while a function cannot.

There is no difference between a stored procedure and a function.

2 / 5

What is the result of the following query: SELECT COUNT(*) FROM Customers;?

The total number of rows in the "Customers" table

The sum of the values in the "Customers" table

The average value of the "Customers" table

The maximum value in the "Customers" table

3 / 5

Which function is used to calculate the average value of a column?

AVG()

SUM()

COUNT()

MIN()

4 / 5

What is the primary purpose of aggregate functions in SQL Server?

To perform mathematical operations on individual rows

To calculate summary statistics for groups of rows

To create new columns in a table

To filter rows based on specific conditions

5 / 5

What is the difference between a scalar function and an aggregate function?

Scalar functions return a single value, while aggregate functions return a set of values.

Scalar functions operate on individual rows, while aggregate functions operate on groups of rows.

Scalar functions are built-in functions, while aggregate functions are user-defined functions.

Scalar functions are used for mathematical operations, while aggregate functions are used for logical operations.

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The average score is 30%

Are you gearing up for an SQL Server interview? Functions are a fundamental aspect of SQL Server, and understanding them is crucial for success. This quiz will help you learn common SQL Server functions interview questions and provide detailed answers to help you ace your next interview.