On 03/03/2015 05:57 AM, Sergei Golubchik wrote: > Hi, Justin! > > On Mar 03, Justin Swanhart wrote: >> You can't drop a busy proc in production to replace it. Many users >> would get an error. This is the same reason views have had CoR for so >> long. So yes it is a big deal! > > Okay, I'm happy to know it. > My main reason for offering this GSoC project was syntax consistency. > Same syntax works identically for all objects, just as a user expects, > no gotchas or unpleasant surprises. > >> Anyway, what I want most are Antony Curtis' stored proc / parser >> changes (mdev 820 if I'm not mistaken). I am especially interested in >> table functions and external stored routines. > > Yes, I'd be happy to see them in 10.2. It's too early to tell what is > going to be there, but I'll certainly put them at the top of list. > >> I'd also like to discuss window functions too. I've implemented them >> in shard-query and have ideas about how to implement them in the >> server, but pluggable parser would be really useful here. > > Window functions have a good chance of being in 10.2, it's MDEV-6115. > But I don't think that somebody is working on MDEV-6115 yet.
I started working on MDEV-6115 some time ago. Regards, Igor. > I'm afraid that a pluggable parser is practically impossible to do > with bison generated parsers. For a recursive descent parser - yes, but > not with bison parsers :( > > The best we can do, I think, is to generalize certain parts of the > parser by using a generic 'identifier' rule instead of a specific > hard-coded keyword token. We've done it a couple of times for plugins: > > in CREATE TABLE: > https://mariadb.com/kb/en/engine-defined-new-tablefieldindex-attributes/ > and in SHOW and FLUSH: > https://mariadb.com/kb/en/information-schema-plugins-show-and-flush-statements/ > > Regards, > Sergei > > > _______________________________________________ > Mailing list: https://launchpad.net/~maria-discuss > Post to : [email protected] > Unsubscribe : https://launchpad.net/~maria-discuss > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~maria-discuss Post to : [email protected] Unsubscribe : https://launchpad.net/~maria-discuss More help : https://help.launchpad.net/ListHelp
