On 12/17/2012 06:43 AM, Rich Prohaska wrote: > What do I need to change in my storage engine for extended keys? > Where should I look? > Thanks.
Hi, see the code /* Currently only InnoDB can use extended keys */ share->set_use_ext_keys_flag(legacy_db_type == DB_TYPE_INNODB); in open_binary_frm(), table.cc (mariadb) You have to change it. There is a similar code in mysql, also in open_binary_frm(),table.cc Regards, Igor. > > On Sun, Dec 16, 2012 at 10:58 PM, Igor Babaev <[email protected]> wrote: >> 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 : [email protected] >>> Unsubscribe : https://launchpad.net/~maria-developers >>> More help : https://help.launchpad.net/ListHelp >> _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
