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- Path: sparky!uunet!ukma!darwin.sura.net!europa.asd.contel.com!emory!emory!not-for-mail
- From: villy@uunet.uu.net (Will Hartung - Master Rallyeist)
- Newsgroups: comp.databases.informix
- Subject: Re: Estimating sizes of indexes
- Date: 12 Nov 1992 13:53:04 -0500
- Organization: Mailing List Gateway
- Lines: 21
- Sender: walt@mathcs.emory.edu
- Distribution: world
- Message-ID: <1du96gINNcq5@emory.mathcs.emory.edu>
- Reply-To: villy@uunet.uu.net (Will Hartung - Master Rallyeist)
- NNTP-Posting-Host: emory.mathcs.emory.edu
- X-Informix-List-ID: <list.1596>
-
- > Jim Kunzman writes:
- [ stuff deleted ]
- > >Can this be done easily?
- >
- > For OnLine, this is covered (in the Guide to SQL Tutorial, pg 10-16)
- > Dave
-
- Of course, for the REALLY lazy, I've found that if you do a DBSCHEMA on
- a table, in the little comment section at the top it gives you both the
- size of the row, and the size of the index(es). The index size is the
- sum of all the indexes including their overhead/padding etc.
-
- If you're looking for data to estimate OnLine extents, etc. those numbers
- seem to follow the formula given in the Admin guide, and they sure beat the
- heck out of adding them up yourself.
-
- This was in 4.0/4.1 that I saw these numbers...
-
- Will
- (uunet!la4gen!villy)
-
-