SQL Database Table to Perl Script

[prithviraj]

I have a 'transaction' table created in SQL like this:

                
TranID  Date        AccNum   Type    Amount ChequeNo DDNo  
657520  02-07-1999  0181432  Debit   16000  465774     
657524  02-07-1999  0181432  Debit   13000           569086
657538  09-07-1999  0181432  Credit  11000  
657548  18-07-1999  0181432  Credit  15500  
657519  02-07-1999  0181432  Debit   12000  
657523  02-07-1999  0181432  Credit  11000  
657529  03-07-1999  0181432  Debit   15000  466777
657539  10-07-1999  0181432  Credit  10000  
657541  11-07-1999  0181432  Debit   12000  
657525  03-07-1999  0181432  Debit   15000           569999
657533  05-07-1999  0181432  Credit  12500

The question is: Query data from transaction table and Calculate the total debit amount and total credit amount for each account. My script is like this:

#!/usr/bin/perl
use DBI;
use strict;
use warnings;
$dbh = DBI->connect('dbi:database','prithvi','prithvi') or die "Couldn
+'t connect";
my $tran_cur = $dbh->prepare("SELECT AccountNumber, Type, SUM(Amount) 
+FROM transaction GROUP BY AccountNumber, Type;");
$tran_cur->execute;
print "<table><tr>";
map {print "<td>$_</td>"}qw(Account Number-Total Debit Amount);
print "<br/>";
print "</tr>";
print "</table>";
while( my @data = $tran_cur->fetchrow_array)
{
 my $rec = join ('-',@data);
 print "$rec\n";
}
$dbh->disconnect;

I am getting the exact output for this. But I have two more questions.

1) Query data from transaction table and calculate the total  balance 
+in each account
2) Query data from transaction table and calculate total amount debite
+d by cheque, dd and by cash for each account.

How can I do this? I just have to replace the SQL query in the above script for the 2 new questions. Please help. Thanks in advance