I'm doing something like this (MySQL):
my $sql=q{replace into styles(field1,field2) values(?,?)};
my $sth=$dbh->prepare($sql);
sub enterStyles{
my($val1,$val2)=@_;
$sth->execute($val1,$val2) || die "Cannot execute: $DBI::errstr\n";
}
What I've found is that if $val1 is undefined, that the execute will be
succesfull and the inserted value will be 0.
The *next* execute will fail and the error message will return an error:
unknown field value checked (that is the value passed as the param).
Is there something I should know about passing undefined values to
placeholders (not something I plan on doing often!). That seemed to me
to be strange behaviour. Is that expected DBI behaviour or a quirk in
MySQL?
Jeff
