Yes, there are many gotchas in MySQL. There are also many gotchas in Oracle and Postgres. I have two comments on them:
  1. MySQL's gotchas are well-documented. Oracle's aren't. This means that I can learn all the gotchas without losing two days on a production box. I don't know about you, but I never assume that application X will behave just like application Y - I read the manual cover-to-cover at least twice. Every time.
  2. Nearly every single gotcha was the result of a request from a user. And, it's because that behavior was unavailable in the existing systems.

Now, I would love for a setting that would allow me to force the server to error out in many of those gotchas, such as inserting NULL into a NOT NULL column. But, it's like Perl - why must everyone conform to your ideas of correct behavior? Maybe, I like the incorrect behavior. :-)

Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.

In reply to Re^8: Conditional many to many relationships with Class::DBI by dragonchild
in thread Conditional many to many relationships with Class::DBI by BigLug

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.