The most efficient way is probably to so something like this: 
my $sth = $dbh->prepare("DELETE FROM table WHERE message_id = ?");
foreach $i (@MESSAGE_IDS){
  $sth->execute($i);
}

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Since the query is always the same, you only need to prepare it once. I suspect that doing it in one query whith an "or" or "in" using the entire list of numbers at once (depending on how many you're deleting) may not be well optomized by the server, and hence slower.

In reply to Re: Deleting Multiple MySQL Rows With DBI by lhoward
in thread Deleting Multiple MySQL Rows With DBI by Red Neckerson

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