I was wondering about wether binding the columns was faster than fetchrow_arrayref() with DBI. The problem is, how do I execute the sql statement outside the functions I'm benchmarking? I can't seem to figure it out. As it is, bindcolumns() seems to be winning, but i think the $sth->execute() is the bottle neck. Any suggestions? 
#!/usr/bin/perl -w
use strict;

use DBI;
use Benchmark;

my $dbh=DBI->connect("DBI:CSV:f_dir=c:\\\\pdox") 
    || die "opening connection: $DBI::errstr; stopped\n";
my $sql='SELECT * FROM exp';
my $sth=$dbh->prepare($sql)
    || die "preparing $sql: $DBI::errstr stopped\n";

sub by_bind
{
    my @res=(0 .. 5);

    $sth->execute() 
        || die "executing $sql: $DBI::errstr stopped\n";
    $sth->bind_columns(\$res[0], \$res[1], \$res[2], \$res[3], \$res[4
+], \$res[5]); 

    while($sth->fetch()){}    
}

sub by_arrayref
{
    my @result = (0 .. 5);

    $sth->execute() 
        || die "executing $sql: $DBI::errstr stopped\n";
    while($sth->fetchrow_arrayref(\@result)){}
}

timethese(100, {'bind' => \&by_bind, 'arrayref' => \&by_arrayref});

$dbh->disconnect();

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In reply to benchmarking DBI bind columns vs. fetchrow_arrayref by coolmichael

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