Which database function is used to calculate values such as COUNT, SUM and AVG?
Options
- A. Aggregate functions
- B. String functions
- C. Date formatting functions
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
A. Aggregate functions
Detailed Explanation
- Aggregate functions: Perform calculations on a set of rows and return a single result.
- COUNT(): Counts rows or non-NULL values.
- SUM(): Calculates the total of numeric values.
- AVG(): Calculates the average of numeric values.