without using any modules
Without anything but DBI hopefully? Avoiding using that would be a mess.
It's probably not very efficient to do it the way you have in mind, but it might look like this:
for my $r (@values) {
for my $k (keys %$r) {
print "$k: $r->{$k}\n";
}
}
A better way would be one row at a time:
my $sth = $db->prepare($sql) or die $db->errstr;
$sth->execute or die $db->errstr;
while( my $h = $sth->fetchrow_hashref ) {
for my $k (keys %$h) { # also see each()
print "$k: $h->{$k}\n";
}
}
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