| From: | Chris <chris(at)bitmead(dot)com> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgreSQL(dot)org, pgsql-sql(at)postgreSQL(dot)org |
| Subject: | Re: [HACKERS] Re: [SQL] Proposed Changes to PostgreSQL |
| Date: | 2000-02-03 12:28:31 |
| Message-ID: | 3899746F.9869F4D8@bitmead.com |
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| Thread: | |
| Lists: | pgsql-general pgsql-hackers pgsql-sql |
Bruce Momjian wrote:
> > Well I see that pg_class has columns like "relhasindex". If we added a
> > "relhassubclass", the overhead should be unmeasureable.
>
> Yes, but how do you keep that accurate? If I add indexes, then drop
> them, does relhasindex go to false.
I don't know. Does it?
>Could you do that for relhassubclass?
If we made it relnumsubclasses and incremented/decremented on
CREATE/DROP, it seems easy in theory.
--
Chris Bitmead
mailto:chris(at)bitmead(dot)com
http://www.techphoto.org - Photography News, Stuff that Matters
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