Microsoft SQL Server Development for Everyone - SQL MAX and MIN Aggregate Functions

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Information Technology (IT), Architecture
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University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial step in retrieving the highest and lowest grades for each course?
Using a JOIN clause
Using a DISTINCT keyword
Selecting course IDs and grades
Applying a HAVING clause
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which SQL clause is necessary when performing aggregate functions like MAX?
ORDER BY
WHERE
GROUP BY
HAVING
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the MAX function do in the context of this exercise?
It calculates the average grade
It counts the number of grades
It finds the highest grade for each course
It finds the lowest grade for each course
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the MIN function in this exercise?
To find the highest grade
To count the number of courses
To find the average grade
To find the lowest grade
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do most aggregate functions only work with numbers?
Because they are used for sorting data
Because they require numeric calculations
Because they are designed for text data
Because they can only count occurrences
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