public function getIndices($table)
{
$res = $this->query("\n\t\t\tSELECT TRIM(RDB\$INDEX_NAME)\n\t\t\tFROM RDB\$INDICES\n\t\t\tWHERE RDB\$RELATION_NAME = UPPER('{$table}')\n\t\t\t\tAND RDB\$UNIQUE_FLAG IS NULL\n\t\t\t\tAND RDB\$FOREIGN_KEY IS NULL;");
$indices = [];
while ($row = $res->fetch(FALSE)) {
$indices[] = $row[0];
}
return $indices;
}