$dbh = DBI->connect ("dbi:CSV:f_dir:/root", undef, undef, {
        f_ext      => ".csv/r",
        RaiseError => 1,
        }) or die "Cannot connect: $DBI::errstr";

my $sql_query = "SELECT * FROM export";

my $sth = $dbh->prepare($sql_query);
$sth->execute();