troubles with db classes

Hello,
I found out the problem at last. The query() method is not implemented
in the pgsql.php file. So when I call the query method, it is called
but as no implementation is provided nothing happens (and no error or
warning is displayed as well). When I try to get count of rows returned
I get the real error...

Wouldn't it be better to give a descriptive error message when numrows()
is called for a handle which is not valid or not full with some data?
Stig?

thanks,
-bd