public function getResultColumns()
{
$count = ibase_num_fields($this->resultSet);
$columns = [];
for ($i = 0; $i < $count; $i++) {
$row = (array) ibase_field_info($this->resultSet, $i);
$columns[] = ['name' => $row['name'], 'fullname' => $row['name'], 'table' => $row['relation'], 'nativetype' => $row['type']];
}
return $columns;
}