#!/usr/bin/perl

use strict;
use warnings;
use Win32::ODBC;

my $db = new Win32::ODBC("DSN") 
    or die Win32::ODBC::Error();

my @table_list = $db->TableList();

my %tables;

for my $table ( @table_list ) {
  if ( $db->Sql("Select * from $table") ) {
    print "Error: " . $db->Error() . "\n";
    $db->close();
    exit;
  }
  else {
    @{$tables{$table}}  = $db->FieldNames();
  } 
}

$db->Close();

foreach my $table ( keys %tables ) {
 print "TABLE $table CONTAINS:\n";
 foreach my $column ( @{$tables{$table}} ) {
   print "\t$column\n";
 } 
}