You could try making the type explicit:
use DBI qw(SQL_VARCHAR);

$sth->bind_param(1, $mrn, SQL_VARCHAR);
$sth->execute();

[download]
Though it would be odd if it does work, because SQL_VARCHAR is supposed to be the default.
Update: The execute() docs say this:
     If any arguments are given, then "execute" will effectively
     call "bind_param" for each value before executing the
     statement.  Values bound in this way are usually treated as
     "SQL_VARCHAR" types unless the driver can determine the
     correct type (which is rare), or unless "bind_param" (or
     "bind_param_inout") has already been used to specify the
     type.

[download]
So that gives some credibility to explicitly declaring the type...maybe the driver is trying to be smart and interpreting your values as numbers, and while Sybase ASE might be able to handle that, perhaps Sybase IQ cannot.

In reply to Re: Using perl dbi and Sybase IQ doing insert with placeholder getting datatype error by runrig
in thread Using perl dbi and Sybase IQ doing insert with placeholder getting datatype error by ckbbkc

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.