https://www.fromdual.com/tags/default/Recent content in Default on FromDual GmbHHugoen-GBoli.sennhauser@fromdual.com (Oli Sennhauser)oli.sennhauser@fromdual.com (Oli Sennhauser)© FromDual GmbHFri, 14 Dec 2018 08:33:25 +0000https://www.fromdual.com/blog/to-null-or-not-to-null-that-is-the-question/Fri, 14 Dec 2018 08:33:25 +0000oli.sennhauser@fromdual.com (Oli Sennhauser)https://www.fromdual.com/blog/to-null-or-not-to-null-that-is-the-question/<p>As we already stated in earlier articles in this blog <br>[<a href="https://www.fromdual.com/using-null-as-default-values" title="Using NULL as default values">1</a> and <a href="https://www.fromdual.com/mariadb-indexing-of-null-values" title="MariaDB indexing of NULL values">2</a><br>] it is a good idea to use <code>NULL</code> values properly in MariaDB and MySQL.</p>https://www.fromdual.com/blog/using-null-as-default-values/Thu, 21 Jul 2011 18:35:34 +0000oli.sennhauser@fromdual.com (Oli Sennhauser)https://www.fromdual.com/blog/using-null-as-default-values/<h2 id="abstract">Abstract:</h2> <p>It is common practice in MySQL table design that fields are declared as <code>NOT NULL</code> but some non-sense <code>DEFAULT</code> values are specified for unknown field contents. In this article we show why this behavior is non optimal an why you should better declare a field to allow <code>NULL</code> values and use <code>NULL</code> values instead of some dummy values.</p>