News 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

NetTuts.com: How to Generate a Complete Excel Spreadsheet From MySQL

PHPit.net: Handling dates and times in PHP & MySQL

Stefan Mischook's Blog: New PHP article in Web Designer Magazine

PHPMaster.com: Bending XML to Your Will

DevShed: Building an Error Logger with the Chain of Responsibility Pattern in PHP 5


Community Events

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


opinion framework php7 configure introduction symfony2 community conference install series performance release part2 language example laravel interview podcast api application

All content copyright, 2015 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework