Date: Sat, 18 Apr 2009 15:07:42 +0200 From: Platonides Platonides@gmail.com

Paul Wakfer wrote:

...

To satisfy this concern (about the JOIN command - which I really need to do before I start trying to make the necessary coding changes), I would really like to know if there is a mediawiki installation which currently used shared tables on one dd with the other tables of at least one of the wikis using this shared table being on an entirely separate db.

--Paul

Mysql allows JOINing tables from different dbs.

Thanks a lot. I am quite new to mysql and it was not clear to me, from a quick read, that this would be so and how it would work.

The problem I see with your setup is that I don't think you can join them if the user is not able to read both tables.

At this point I don't see why I cannot put in an extra configuration setting LocalSettings.php, for a shared db username (say $wgSharedDBuser) and then change the mediawiki db accessing code to use it, rather than the wiki's specified db username ($wgDBuser) whenever the shared tables are accessed. At least, that is what I plan to try. While I am at it I also plan to create configuration settings $wgSharedDBserver and $wgSharedDBpassword to make it more complete and flexible to situations. It would be nice if at some time in the future this change would become a planned and implemented modification to the standard mediawiki software to increase its site configuration flexibility.

--Paul Wakfer