[transactions] soldier on anyway?

Kind people,

I've got a transaction that does a few inserts, but it's OK for one
specific one to fail in a specific way (adding a field that's already
there).

What happens instead of what I expected is:

current transaction is aborted, queries ignored until end of transaction block

What magic do I use to get this behavior not to happen? I'm using
DBD::Pg on 7.3.4, and I make the connection as follows:

$dbh = DBI->connect(
"dbi:Pg:dbname=$dbname"
, $user
, $password
, {
AutoCommit => 0
, RaiseError => 0 # I thought this part did what I want.
, PrintError => 1
}
);

What's going on here, and how do I fix it?

Cheers,
D
--
David Fetter david(at)fetter(dot)org http://fetter.org/
phone: +1 510 893 6100 cell: +1 415 235 3778