> Thank you for the explanation! So it seems that the database engine is
> 'responsible' for the unavailability of that feature, not the driver.

You can state it that way, but in fact the database is 'responsible' for
supporting prepared statements which are used to increase the spead of the
applications.

> It's not unwillingness. I simply thought that I can spare an extra
> method for the prepared statements, as it would be largely of the same
> kind as the existent one, but it seems that I definitely need such.

That is wrong approach. If you want to use prepared statements, handle them
separately as they were designed to. If you want to execute just strings,
nobody prevents you from doing it - use java.sql.Statement. It is
conceptually wrong to use prepared statement only to convert question marks
into string representation of the parameters - it is much more easier to
construct the right string in the application already.

Roman