my $matchStr = join '|', map {$hash{$_}[0]} keys %hash;
my $match = qr/($matchStr)/i;

while (my $cur_line = <fh_log>) {
    #If this query contains reference to this table
    next if $cur_line !~ $match;

    #count up how many times this table is referenced.
    $table_stats{$1}++;
    $table_refs++;    #total table references (for % calc)
}