SQL Average (AVG) Function
“Average” is an Aggregate (Group By) Function. It’s used to calculate the average of a numeric column from the set of rows returned by a SQL statement.
Here is the syntax for using the function:
select groupingField, avg(num_field) from table1 group by groupingField
Here’s an example using the student table:
select studentID, FullName, avg(sat_score) from student group by studentID, FullName;