Re: [PATCHES] Non-colliding auto generated names
От | Bruce Momjian |
---|---|
Тема | Re: [PATCHES] Non-colliding auto generated names |
Дата | |
Msg-id | 200303052004.h25K44U27228@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [PATCHES] Non-colliding auto generated names (Rod Taylor <rbt@rbt.ca>) |
Список | pgsql-hackers |
Yes, our sequence name/column linkage should be much more automatic than it is now, and if we do that, we can start to think about sequence name collision avoidance. --------------------------------------------------------------------------- Rod Taylor wrote: -- Start of PGP signed section. > On Wed, 2003-03-05 at 14:37, Bruce Momjian wrote: > > Interesting idea. The bigger problem is that apps who use the sequence > > name also would have problems running after the restore. Seems we need > > column.nextval() so you can increment the sequence without knowing the > > sequence name, just the column name. Of course, this related to this > > TODO item: > > > > * Have sequence dependency track use of DEFAULT sequences, > > seqname.nextval > > 200N spec proposes 'NEXT VALUE FOR <sequence>'. > > Tom will shoot me if I submit that though (VALUE as a keyword again). I > suppose one could make it a variable, and confirm it's value is VALUE? > > Other than that it should be a fairly simple task. > > > Anyway, once again we could extend to include: > > NEXT VALUE ON table(column)? > > > An application that was simply interested in the next value of a table > column could simply evaluate the default value -- which should be easily > retrievable and more portable in most interfaces (jdbc, odbc, etc.). > > -- > Rod Taylor <rbt@rbt.ca> > > PGP Key: http://www.rbt.ca/rbtpub.asc -- End of PGP section, PGP failed! -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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