wbearперловый драйвер для PG подставляет пласехлдеры сам !!!! .. неумеет он делать perpare и executeВроде бы последний DBD::Pg версии 1.40 это умеет: perldoc DBD::Pg$sth = $dbh->prepare($statement, \%attr);

Prepares a statement for later execution. PostgreSQL supports prepared
statements, which enables DBD::Pg to only send the query once, and
simply send the arguments for every subsequent call to execute().
DBD::Pg can use these server-side prepared statements, or it can
just send the entire query to the server each time. The best way
is automatically chosen for each query. This will be sufficient for
most users: keep reading for a more detailed explanation and some
optional flags.

Deciding whether or not to use prepared statements depends on many
factors, but you can force them to be used or not used by passing
the pg_server_prepare attribute to prepare(). A "0" means to never
use prepared statements. This is the default when connected to servers
earlier than version 7.4, which is when prepared statements were introduced.
Setting pg_server_prepare to "1" means that prepared statements
should be used whenever possible. This is the default for servers
version 7.4 or higher.

...Мы работаем на постгресе 7.3, проблем с bind-ом нет, а как с этим на 7.4 и восьмерке - не знаю. :( Кажется, что в каждом prepare писать ?::integer - действительно "нездоровая шняга". :) Может быть устанавливать "pg_server_prepare => 0" при подключении к базе?