Problem with setNull()

I consider this to be a reasonably major bug.  Fortunatly this should be
quite easy to fix as well.

AbstractJdbc1Statement ignores the SQL type, which is fine, but when
actually giving the information to the database, rather than passinga
NULL it's passing ''. 

In particular this doesn't work with the bigint type and an error
occurs.

What is worse, is that no exception is thrown when this occurs.  I have
yet to track this particular problem down.

Regards,


Robert M. Zigweid