Re: DBI question with placeholders and IN

[dws]

You need as many bind variables as you have values. Try the following (untested):

my $bindvars = join(",", ("?") x scalar @values);
my $sql = <<END_SQL;
SELECT COUNT(*)
FROM some_table
WHERE some_column IN ($bindvars)
END_SQL

my $sth = $dbh->prepare_cached($sql) || die;
$sth->execute(@values) || die;
...