Table of Contents
MySQL aggregate function
1: COUNT (): Returns the number of rows in a database table.
2: SUM (): Returns the total sum of a numeric column.
3: AVG (): Calculate the average of a set of values.
4: MIN (): Returns the lowest value (minimum) in a set of non-NULL values.
5: MAX (): Returns the greatest value (maximum) in a set of non-NULL values.
