private function formatQueryParameters(array $parameters)
{
$options = ['parameterMode' => $this->isAssoc($parameters) ? 'named' : 'positional', 'useLegacySql' => false];
foreach ($parameters as $name => $value) {
$param = $this->mapper->toParameter($value);
if ($options['parameterMode'] === 'named') {
$param += ['name' => $name];
}
$options['queryParameters'][] = $param;
}
return $options;
}