PHP MySQL Aggregate AVG

PHP MySQL Aggregate Function AVG()

The Aggregate Function AVG() returns the average value in the row.

Syntax

Return average hourly salary.

SELECT AVG(salary)
FROM employee_salary;

Example 1

<?php

define('HOST', 'localhost');
define('USER', 'root');
define('PASS', 'yeething');
define('DBNAME', 'woowood');

$connection = mysql_connect(HOST, USER, PASS)
		  or die("can not connect to the server!<br/>");


$rdb = mysql_select_db(DBNAME)
		  or die("The " . DBNAME . "database could not be selected");

$sel_query = "SELECT AVG(salary) FROM employee_salary";

$result = mysql_query($sel_query, $connection) or die(mysql_error($connection));

echo mysql_result($result, 0);

mysql_close($connection);
?> 

Output

38.8

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5. MySQL Aggregate AVG
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