function getStatsIndexIO($table)
{
$c_schema = $this->_schema;
$this->clean($c_schema);
$this->clean($table);
$sql = "SELECT * FROM pg_statio_all_indexes \n\t\t\tWHERE schemaname='{$c_schema}' AND relname='{$table}' \n\t\t\tORDER BY indexrelname";
return $this->selectSet($sql);
}