public function getFunctionTests()
{
$args = array();
$args[] = [AggregateFunction::SUM(10), 'SELECT SUM(10)'];
$args[] = [AggregateFunction::SUM('total_amount'), 'SELECT SUM(total_amount)'];
$args[] = [AggregateFunction::SUM(new Distinct('total_amount')), 'SELECT SUM(DISTINCT total_amount)'];
$args[] = [AggregateFunction::MAX('views'), 'SELECT MAX(views)'];
$args[] = [AggregateFunction::MIN('views'), 'SELECT MIN(views)'];
$args[] = [AggregateFunction::AVG('buyPrice'), 'SELECT AVG(buyPrice)'];
$args[] = [AggregateFunction::COUNT('*'), 'SELECT COUNT(*)'];
$args[] = [new SelectAs(AggregateFunction::COUNT('*'), 'a'), 'SELECT COUNT(*) AS `a`'];
return $args;
}
