fetchrow_hashref () is slower than using bind_columns (), with which you can achieve the same:

my %rec;
my $sth = $dbh->prepare ("select * from foo");
$sth->execute;
$sth->bind_columns (\@rec{@{$sth->{NAME_lc}}});
while ($sth->fetch) {
    print "foo.c_foo = $rec{c_foo}\n";
    }

[download]

Some proof with a table with 8 fields and and 62684 records:

cmpthese (5, {
    hashref     => sub {
        my $sth = $dbh->prepare ("select * from ll_go");
        $sth->execute;
        1 while my $h = $sth->fetchrow_hashref;
        },
    bindcol     => sub {
        my %rec;
        my $sth = $dbh->prepare ("select * from ll_go");
        $sth->execute;
        $sth->bind_columns (\@rec{@{$sth->{NAME_lc}}});
        1 while $sth->fetch;
        },
    })

=>

perl bench.pl
          Rate hashref bindcol
hashref 1.31/s      --    -76%
bindcol 5.49/s    320%      --

[download]

Enjoy, Have FUN! H.Merijn

In reply to Re: DBI : Get Column name and Value in hash by Tux
in thread DBI : Get Column name and Value in hash by vinoth.ree

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