Microsoft SQL Server Development for Everyone - Grouping Data using the SQL GROUP BY Clause

Microsoft SQL Server Development for Everyone - Grouping Data using the SQL GROUP BY Clause

Assessment

Interactive Video

Information Technology (IT), Architecture, Social Studies

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains the SQL Group By statement, its differences from Select Distinct, and how it is used with aggregate functions to group data and perform calculations like count, average, max, and min. Practical examples demonstrate how to write SQL queries using Group By, handle errors, and use aliases to avoid ambiguity in queries.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of the SQL Group By statement?

To delete duplicate rows

To group data for aggregate functions

To sort data in ascending order

To filter data based on conditions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the Select Distinct statement function?

It filters data based on a specific condition

It sorts data in descending order

It selects only unique rows from a dataset

It groups data for mathematical operations

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key difference between Group By and Select Distinct?

Group By eliminates duplicates, Select Distinct groups data

Group By groups data, Select Distinct eliminates duplicates

Both perform the same function

Group By sorts data, Select Distinct filters data

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which SQL clause must be included before the Group By clause?

ORDER BY

HAVING

WHERE

SELECT

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if you include a unique column in a Group By clause?

It duplicates the rows

It causes an error

It results in no grouping

It groups all rows into one

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to include all referenced columns in the Group By clause?

To filter out unwanted data

To ensure accurate grouping

To avoid syntax errors

To ensure all data is sorted

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of using Group By with aggregate functions?

It filters data based on conditions

It sorts data in ascending order

It provides a summary of data

It deletes duplicate rows

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