What are the potential pitfalls of using "IS NOT NULL" in a PHP MySQL query with additional conditions?

Using "IS NOT NULL" in a MySQL query with additional conditions can lead to unexpected results if the additional conditions are not properly handled. To avoid this, make sure to include the additional conditions within the WHERE clause and use parentheses to group them properly. 

$query = "SELECT * FROM table WHERE column IS NOT NULL AND additional_condition = 'value'";
$result = mysqli_query($connection, $query);

if(mysqli_num_rows($result) > 0) {
    // Process the results
} else {
    // Handle no results
}

Keywords

PHP MySQL IS NOT NULL query conditions

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