function MetaPrimaryKeys($table, $owner=false)
	{
	global $ADODB_FETCH_MODE;

		$schema = '';
		$this->_findschema($table,$schema);
		if (!$schema) $schema = $this->database;
		if ($schema) $schema = "and k.table_catalog like '$schema%'";

		$sql = "select distinct k.column_name,ordinal_position from information_schema.key_column_usage k,
		information_schema.table_constraints tc
		where tc.constraint_name = k.constraint_name and tc.constraint_type =
		'PRIMARY KEY' and k.table_name = '$table' $schema order by ordinal_position ";

		$savem = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		$a = $this->GetCol($sql);
		$ADODB_FETCH_MODE = $savem;

		if ($a && sizeof($a)>0) return $a;
		$false = false;
		return $false;
	}