my $db = new Win32::ODBC('$DSN');

Firstly, you need to either remove the tic marks or use double quotes. The way this is written, you're sending exactly $DSN as a string. If you want to send what $DSN is set to, then use: my $db = new Win32::ODBC($DSN);

Secondly, this probably explains the next problem... $db is undefined because the instance creation failed. In other words, after you do this:

my $db = new Win32::ODBC($DSN);

You should check $db to verify that the object was created successfuly. If it could not connect, then $db will be undefined. The error you are seeing is because you can't call the function Sql on an undefined $db variable.

Seriously, a little time with the perl debugger, now that you've got compilable code, would help you understand what's going on.

Neat Debugger tricks

Re: Linux vs. Windows for Learning Perl

perl debugger

Hazah! I'm Employed!

In reply to Re^6: Perl CGI and SQL statements by osunderdog
in thread Perl CGI and SQL statements by kjg

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.