RE: JDBC problem with DELETE

Dave,

Um... just thought I'd ask...

Are you really using "John Doe" (as in the email)
or is that just a dummy placeholder for the real
names you inserted?

The reason why I ask is that I remember the first
time I was bit by the ole single quote problem was
dealing with an 'O'Connor' that, of course, really
should have been an 'O''Connor'. Thought maybe
something similar was happening here...

-Tim.

-----Original Message-----
From: Dnesbitt(at)encryptix(dot)com [mailto:Dnesbitt(at)encryptix(dot)com]
Sent: Friday, July 28, 2000 10:09 PM
To: peter(at)retep(dot)org(dot)uk; petermount(at)it(dot)maidstone(dot)gov(dot)uk;
pgsql-interfaces(at)postgresql(dot)org
Cc: Dnesbitt(at)encryptix(dot)com
Subject: RE: [INTERFACES] JDBC problem with DELETE

Thanks, Peter. Please let me know if you see anything.

I can't see how my Java code could be losing the single quotes. It is such
a simple statement. But then again, I have made obvious coding errors that
I just can't see a time or two in the past. :-)

Why is PreparedStatement the proper safe way? From a coding perspective, it
takes more lines of code and it would seem to also require slightly more
computation as well.

Regards,
//Dave

> -----Original Message-----
> From: Peter Mount [mailto:peter(at)retep(dot)org(dot)uk]
> Sent: Thursday, July 27, 2000 10:52 AM
> To: Dnesbitt(at)encryptix(dot)com; petermount(at)it(dot)maidstone(dot)gov(dot)uk;
> pgsql-interfaces(at)postgresql(dot)org
> Cc: Dnesbitt(at)encryptix(dot)com
> Subject: Re: [INTERFACES] JDBC problem with DELETE
>
>
> I'm not sure, but it might be loosing the quote somewhere.
>
> The proper safe way is to use PreparedStatement. I'll try it
> here just to
> make sure it isn't a bug though.
>
> Peter
>
> --
> Peter T Mount peter(at)retep(dot)org(dot)uk, peter(at)retepdigital(dot)com,
> me(at)petermount(dot)com
> Homepage: http://www.retep.org.uk Contact details @
> http://petermount.com
> PostgreSQL JDBC: http://www.retep.org.uk/postgres/
> Java PDF generator: http://www.retep.org.uk/pdf/
>
> ----- Original Message -----
> From: <Dnesbitt(at)encryptix(dot)com>
> To: <petermount(at)it(dot)maidstone(dot)gov(dot)uk>;
> <pgsql-interfaces(at)postgresql(dot)org>
> Cc: <Dnesbitt(at)encryptix(dot)com>
> Sent: Thursday, July 27, 2000 5:55 PM
> Subject: RE: [INTERFACES] JDBC problem with DELETE
>
>
> > Peter,
> >
> > The sql does work from psql.
> >
> > I also tried your suggestion about using PreparedStatement and that
> worked!
> >
> > Am I doing something wrong with Statement or is it a bug?
> >
> > Regards,
> > file://Dave
> >
> > > -----Original Message-----
> > > From: Peter Mount [mailto:petermount(at)it(dot)maidstone(dot)gov(dot)uk]
> > > Sent: Wednesday, July 26, 2000 11:48 PM
> > > To: 'Dnesbitt(at)encryptix(dot)com'; pgsql-interfaces(at)postgresql(dot)org
> > > Subject: RE: [INTERFACES] JDBC problem with DELETE
> > >
> > >
> > > Does this happen when you run the sql from psql?
> > >
> > > How about using PreparedStatement instead of Statement? It
> > > would then handle
> > > the quoting correctly (which is what I'm thinking is going
> > > wrong here).
> > >
> > > Peter
> > >
> > > --
> > > Peter Mount
> > > Enterprise Support
> > > Maidstone Borough Council
> > > Any views stated are my own, and not those of Maidstone
> > > Borough Council
> > >
> > >
> > > -----Original Message-----
> > > From: Dnesbitt(at)encryptix(dot)com [mailto:Dnesbitt(at)encryptix(dot)com]
> > > Sent: Thursday, July 27, 2000 5:41 AM
> > > To: pgsql-interfaces(at)postgresql(dot)org
> > > Cc: Dnesbitt(at)encryptix(dot)com
> > > Subject: [INTERFACES] JDBC problem with DELETE
> > >
> > >
> > > The following piece of code:
> > >
> > > stmt.executeUpdate("delete from friend where
> name='"+someName+"'");
> > >
> > > is returning:
> > >
> > > SQLException: java.sql.SQLException: ERROR: Attribute
> > > 'John Doe' not
> > > found
> > >
> > > where someName is "John Doe".
> > >
> > > Any ideas? The row where name='John Doe' is definitely in
> > > the table and I
> > > can execute the statement without problems from psql.
> > >
> > > Thanks in advance for your help.
> > >
> > > Regards,
> > > file://Dave
> > >
>