#!/usr/bin/perl

use strict;
use warnings;

use DBI;

my $db='test';
my $host='localhost';
my $user='root';
my $password='';
my $i= 0;

my $dbh = DBI->connect("DBI:mysql:$db:$host",
"$user", "$password",
{ PrintError => 0}) || die $DBI::errstr;

$dbh->do("drop procedure if exists testproc") or print $DBI::errstr;

$dbh->do("create procedure testproc() deterministic
begin
declare a,b,c,d int;
set a=1;
set b=2;
set c=3;
set d=4;
select a, b, c, d;
select d, c, b, a;
select b, a, c, d;
select c, b, d, a;
end") or print $DBI::errstr;

my $sth= $dbh->prepare('call testproc()') ||
die $DBI::err.": ".$DBI::errstr;

$sth->execute || die DBI::err.": ".$DBI::errstr;
do {
print "\nResult set ".++$i."\n---------------------------------------\n\n";
for my $colno (0..$sth->{NUM_OF_FIELDS}-1) {
print $sth->{NAME}->[$colno]."\t";
}
print "\n";
while (my @row= $sth->fetchrow_array()) {
for my $field (0..$#row) {
print $row[$field]."\t";
}
print "\n";
}
} until (!$sth->more_results)