This related to Transactions (or this is my intent). According to the 'Perl DBI' book (section 6.3.5 Combining Automatic Error Handling with Transactions):
Imagine combining the automatic error detection of the DBI's RaiseError attribute and the error trapping of Perl's eval { ... } and the error handling properties of transactions. The result is a simple yet powerful way to write robust applications in Perl.
...
Using RaiseError helps here because it generates a message (or Perl $@ variable value) that includes the underlying error from the driver, and the driver and method names.
If $@ is not containing the error message, why does the example from the book (and Randal's article) use this method of trapping errors?

--
notsoevil
--
Jeremiah 49:32 - And their camels shall be a booty. . .


In reply to Re: Re: DBI error and $@ by notsoevil
in thread DBI error and $@ by notsoevil

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.