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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