G'day htmanning,

"Is there anything wrong with this?"

The use of smart matching (~~) is experimental, so that's not good. It also looks like you're using (global) package variables: not good either - put use strict; at the start of your code and see what that tells you.

I rather agree with ++afoken's comment about using the SQL to get rid of the duplicates; however, for cases where you don't have that option, the classic, general solution would be something like: 

my %seen;

while (...) {
    next if $seen{$_}++;
    print;
}

[download]

You introduced @list which didn't exist in your OP. You already have the data that's in that array: 

keys %seen

[download]

— Ken

In reply to Re^3: Printing Categories from SQL search by kcott
in thread Printing Categories from SQL search by htmanning

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.