On 12/14/2012 11:33 AM, Rich Prohaska wrote: > MySQL 5.6.9 changed how the number of key parts are measured. They > replaced one simple counter (key_parts) with four counters. Glancing > at the code, i assume that this was done to support extended keys. If > so, the mariadb implementation of extended keys is a lot simpler. We > have to maintain the tokudb storage engine on both mysql and mariadb. > Is the mariadb design going to change to match the 5.6 implementation, > or are the designs now separate? > Thanks > Rich Prohaska
Hi, MariaDB supports extended keys starting with first version of 5.5. See https://kb.askmonty.org/en/extended-keys/. See also blogs: http://igors-notes.blogspot.com/2011/12/3-way-join-that-touches-only-indexes.html http://s.petrunia.net/blog/?p=74 The interesting thing is that Oracle essentially pulled MariaDB implementation for this feature into a mysql version that was in RC. Yet one hardly can find anything about the feature in the changelog or in the manual. Regards, Igor. > > _______________________________________________ > Mailing list: https://launchpad.net/~maria-developers > Post to : maria-developers@lists.launchpad.net > Unsubscribe : https://launchpad.net/~maria-developers > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : maria-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
