Which of the following set of functions is a valid set of aggregate functions…
2023
Which of the following set of functions is a valid set of aggregate functions in MySQL?
Answer: C. COUNT(), MAX(), SUM() — In MySQL, aggregate functions are used to perform calculations on a set of values and return a single value. Valid aggregate functions include: COUNT() →…
- A.
AVG(), ROUND(), COUNT()
- B.
MIN(), UPPER(), AVG()
- C.
COUNT(), MAX(), SUM()
- D.
DATE(), COUNT(), LTRIM()
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Correct answer: C
In MySQL, aggregate functions are used to perform calculations on a set of values and return a single value. Valid aggregate functions include: COUNT() → counts number of rows
MAX() → returns maximum value
SUM() → returns total sum
Other options include non-aggregate functions like UPPER(), ROUND(), DATE(), LTRIM(), so they are not correct.
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