| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | Zeugswetter Andreas OSB sIT <Andreas(dot)Zeugswetter(at)s-itsolutions(dot)at>, KaiGai Kohei <kaigai(at)ak(dot)jp(dot)nec(dot)com>, KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Updates of SE-PostgreSQL 8.4devel patches (r1268) |
| Date: | 2008-12-11 15:19:29 |
| Message-ID: | 20081211151929.GF3807@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
Bruce Momjian wrote:
> The idea is that the security columns will hold an OID and the OID will
> point to a row in a table that contains the security rights/ACL for the
> column, with multiple rows using the same rights OID. If you change the
> rights on the column the code has to check the existing entries and add
> a new one if it doesn't already exist. This does add the problem of how
> to remove security rows that are no longer referenced.
How will it search for existing entries? Are you saying that it will
seqscan the whole catalog of entries, looking for a match?
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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