If all you want is a count of unique theadIDs, you can use a hash. 
rows=$sth->rows;
%threads;
while (($pointer = $sth->fetchrow_hashref) && ($current_count_all <= $
+stopcount_all)){
       
    $threads{$pointer->{'threadID'}}++;    

}
my $threadCount = scalar keys %threads;

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In reply to Re: Counting fields from database by wazat
in thread Counting fields from database by htmanning

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