When you use DB placeholders you're protected from that kind of sillyness. All that will happen with your example query is that it will look for rows where the bar col contains ; DROP TABLE big_important_one. Its only when quoting by hand in a query that you have to worry about that kind of attack. DB calls using placeholders are one of the few places that you can generally trust that maliciously malformed user data won't be able to cause harm.

Note: if your DB does not support placeholders, and the DBD simulates them for you; you could still get into trouble if its not done properly. However, I don't know of any DBD that does this...

In reply to Re: DBI Parameter Security by lhoward
in thread DBI Parameter Security by pileswasp

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.