Your criteria aren't quite accurate.

Just because a script is written in Perl doesn't mean that the problem being addressed in the question is a Perl issue or question. If there's Perl somewhere in the mix, and the question is dealing with the Perl portion of the mix, you're on topic. But if there's Perl somewhere in the mix, and the question is dealing with SQL, or HTML, or something unrelated to Perl, you're off topic.

Examples: "I have a Perl script and can't figure out why my SELECT statement isn't finding the correct data." -- That's an SQL question, not a Perl question.

"I have a CGI script written in Perl, and can't figure out how to make a table." -- That's an HTML question, as long as it's already understood that print is all that's needed to output HTML.