Are you by any chance the same person that posted on stackoverflow at http://stackoverflow.com/questions/7432944/undefined-dbierrstr-using-dbi-perl-and-mysql-on-windows-7-x64/7434259 and who posted to dbi-users mailing list at http://email@example.com/msg34081.html and reported https://rt.cpan.org/Public/Bug/Display.html?id=71047?
If so I have tried to help on some of those forums but you need to come up with something demonstrable that anyone else can run. The problem is that every pseudocode version you've posted works fine for me so I can only assume a) you have different versions or b) I've misinterpreted your pseudocode.
Write a small self contained real example that fails, post it along with your Perl, DBD::mysql and DBI versions and show the exact output of the script which demonstrates $DBI::errstr is not defined. Then if we cannot reproduce it we can help you debug it or perhaps trace it but we need to see a real life full example.
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:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||