Which of the following are SQL aggregate functions?1) COUNT2) SUM3) AVG4) MAXQuestion 15Select one:a.2,3,4b.3,4,1c.1,2,3,4d.2,1,3
Question
Which of the following are SQL aggregate functions?1) COUNT2) SUM3) AVG4) MAXQuestion 15Select one:a.2,3,4b.3,4,1c.1,2,3,4d.2,1,3
Solution
The correct answer is c. 1,2,3,4. All of these are SQL aggregate functions. COUNT() function returns the number of rows that matches a specified criterion. SUM() function returns the total sum of a numeric column. AVG() function returns the average value of a numeric column. MAX() function returns the largest value of the selected column.
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