News Feed
Jobs Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Eran Galperin's Blog:
Multiple row operations in MySQL / PHP
May 14, 2009 @ 09:35:35

Eran Galperin has made a recent post about performing multiple row operations in MySQL - inserts and updates.

Multiple row operations are in common use in a normalized application databases as one database entity is often linked to multiple sub-entities (for example a user and his tags). [...] Too often I've seen such queries ran in long loops one at a time, which is very bad for performance (as I will show here) and sometimes equally bad for integrity (if the process is interrupted). So what are the alternatives?

His alternatives include concatenation of values for an insert (rather than looping) and updating the information with a "ON DUPLICATE KEY UPDATE" statement or, for multiple tables, using a join.

0 comments voice your opinion now!
tutorial insert update mysql


blog comments powered by Disqus

Similar Posts

Piotr Walczyszyn's Blog: Configuring Eclipse PDT & Flash Builder 4 Plug-in for PHP/Flex development

PHPBuilder.com: Testing with the Zend Framework: How to Get Started

Zend Developer Zone: Zend Framework 1.0.1 Releases

DevShed: Implementing the Stage Pattern in PHP 5

DevShed: The Switch Statement and Arrays


Community Events











Don't see your event here?
Let us know!


facebook code opinion hack release composer install example introduction component symfony2 unittest framework language package overview application podcast security hhvm

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework