I have a selectall_hashref. I cannot change this. I must work with it. I am trying to reference keys within the returned hash reference. So far, I have been using nested foreach loops, but it just looks sloppy. I was hoping there was a better answer to this:
my $asdf = $dbh->selectall_hashref($sth, ['blah1','blah2','blah3']); my ($key1, $key2, $key3); foreach $key1 (keys %{$asdf}) { foreach $key2 (keys %{$asdf->{$key1}}) { foreach $key3 (keys %{$asdf->{$key1}->{$key2}} +) { # Do something here... } } }
blah1, blah2, and blah3 are column names in the $sth select. The values of those columns are key1, key2, and key3 respectively. Is there a way that I can directly reference the values of those column names (after the selectall_hashref) and ditch the foreach loops?

In reply to DBI's selectall_hashref and nested foreach loops by jacques

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.