use warnings;
use strict;

my (@results, @final, %seen);

while(<>){
  tr/\0//d;  # strip NULs

  # if we're INSERTing into Photo (but not from)...
  if (/(?<!from )INSERT INTO Photo/) {
    # get: BEFORE (INSIDE) AFTER from string
    my @s = split /[()]/;
    push @results, [ $s[0], "($s[1])", $s[2] ];
  }
}

# sort by the values in parens
@final = sort { $a->[1] cmp $b->[1] } @results;

open OUT, ">results.txt" or die $!;

for my $line (@final) {
  my $fieldNames = $line->[1];

  # if we've never seen these values, print
  if (not $seen{$fieldNames}) {
    print OUT @$line;
    $seen{$fieldName}++;
  }
}
close OUT;