Re: Limiting factors of pg_largeobject
От | Joshua D. Drake |
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Тема | Re: Limiting factors of pg_largeobject |
Дата | |
Msg-id | 3FC526FC.70709@commandprompt.com обсуждение исходный текст |
Ответ на | Re: Limiting factors of pg_largeobject (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Limiting factors of pg_largeobject
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Список | pgsql-hackers |
>Breaking all the client-visible LO APIs, for one thing ... > > > Erck. >> 1. A larger identifier >> 2. An identifier that is not typed to the underlying system (oid) >> 3. The ability to be indexed >> >> > > > >> We may benefit. Am I on crack? >> >> > >I don't see what you're getting at with #2 and #3 at all. OID is >perfectly indexable. > > > Well number 2 is that we have a limit on total number of OID's yes? Which means we could theorectically run out of OID's because of pg_largeobject. The ability to be indexed is obviously there but one problem we have is that you can't create an index on a system table at least not a user level index. Is there system level indexes that I am unaware of? >As for #1, it'd theoretically be useful, but I'm not sure about the >real-world usefulness. If your large objects are even moderately >"large" (for whatever value of "large" applies this week), you're not >likely to be expecting to cram 4 billion of them into your database. > >If we were doing LOs over for some reason it might be interesting to >consider this, but I think they're largely a legacy feature at this >point, and not worth that kind of effort. It would be better to put the >development effort on creating serial access capability to toasted >fields, whereupon LOs would really be obsolete. > > regards, tom lane > >---------------------------(end of broadcast)--------------------------- >TIP 6: Have you searched our list archives? > > http://archives.postgresql.org > > -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC and S/JDBC Postgresql support, programming shared hosting and dedicated hosting. +1-503-667-4564 - jd@commandprompt.com - http://www.commandprompt.com Mammoth PostgreSQL Replicator. Integrated Replication for PostgreSQL
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