Question

$sth = $dbh->prepare($sql);
$sth->execute();
$sth->{NAME};

But how do you do that when:

$hr  = $dbh->selectall_hashref($sql,'pk_id');

There’s no $sth, so how do you get the $sth->{NAME}? $dbh->{NAME} doesn’t exist.

Answer 1

When you’re looking at a row, you can always use keys %$row to find out what columns it contains. They’ll be exactly the same thing as NAME (unless you change FetchHashKeyName to NAME_lc or NAME_uc).