I like to connect multiple hash variables with mysql database connection?How can i do it.Suppose if have four database names in hash i want to pass those database names as variables for database connection .How can i do it? 
use strict;
use warnings;
use Getopt::Long;
my $site;
GetOptions("site=s" => \$site)
    or die "Error in command line arguments\n";
    if($site eq ''){
      $site = 'site1';
    }
defined $site
   or die "usage: $0 site_name\n";
   my %site_map = (
   site1  => [ qw(a_site1_current) ],
    site2    => [ qw(a_site2_current) ],
    site3 => [ qw(a_site3_current) ],

);

sub connect {
    $host     = "dam.sd.aog.com";
    $database = "a_$site_map\_current" ;
    $user     = "ad" ;
    $pw       = "123";

    my $dsn = "DBI:mysql:host=$host";
    my $dbh = DBI->connect($dsn, $user, $pw) ||
        die "ERROR: can't connect to database server\n";
    return $dbh;


}
sub ShowContents {
    my @arr = @{$site_map{$site}};
    #print @arr;        
}

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I had tried the above manner to pass all hash table site names into the database connection but my code is not working.Help me to fix the issue.Thanks for any help in advance.

In reply to How to pass hash site variables into sql connection using perl? by finddata

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