I don't have a MySQL database here to try it but perhaps this exerpt from DBI documentation can help: 
Data Types for Placeholders

   The "\%attr" parameter can be used to hint at the data type the
   placeholder should have. Typically, the driver is only interested
   in knowing if the placeholder should be bound as a number or a
   string.

        $sth->bind_param(1, $value, { TYPE => SQL_INTEGER });

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In the error message the number 10 was quoted (like a string), MySQL usually accepts quoted numbers where a number must be, but perhaps not in the LIMIT part of the statement.

(this answer was lead by a suggestion by PodMaster in CB).

In reply to Re: security question... by zby
in thread security question, mysql, limit, dbi, and placeholders by powerhouse

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