Hello,

Although DBI docs clearly state that:
The execute method does not return the number of rows that will be returned by the query (because most databases can't tell in advance), it simply returns a true value.
this solution works for me, (MySQL 3.23.58, DBI 1.38, DBD::mysql 2.9003) without an ugly error: 
... 
my $count = $sth->execute or die;
my $total = 0;
while (my $rows = $sth->fetchall_arrayref([0], 3)) {
die "Error: $DBI::errstr" if $DBI::err; # error different
                                                 # to 'end of while'
for (@$rows) {
    print "got @$_\n";
 }
  print "---\n";
$total += scalar @$rows;
last if $total == $count;
}

[download]

-sheep

update: Corrected logic errror I found in my thinking...

In reply to Re: DBI::fetchall_arrayref() error by sheep
in thread DBI::fetchall_arrayref() error by blokhead

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.