My principle is to always let the database do what it does well. 
my $count_sth = $dbh->prepare(
  'SELECT count(*) FROM subscription WHERE userid IN (' .
  join(',', "?" x @compare_array) .
  ')');
$count_sth->execute(@compare_array);
my $count = $count_sth->fetchrow_array;

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-- Randal L. Schwartz, Perl hacker

In reply to Re: Comparing an array to a DBI table by merlyn
in thread Comparing an array to a DBI table by oakbox

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