Re: Updates of SE-PostgreSQL 8.4devel patches (r1324)

Gregory Stark wrote:
> KaiGai Kohei <kaigai@kaigai.gr.jp> writes:
> 
>> I didn't replace the previous implementation blindly, I have a few
>> reasons that the current one is better than previous one.
>>
>> For example, if an input handler has side-effects, what is happen in
>> the following query?
>>
>>   SELECT 'valid_but_new_security_label'::regseclabel;
>>
>> It looks like a read-only query, but the input handler can insert a new
>> tuple into pg_security. In addition, the newly inserted tuple may not
>> be refered any more. It is a waste of spaces.
> 
> Ooh, and how would we know when to vacuum this label?

It is not necessary, because the number of security labels
are assumed enough small.

Thanks,
-- 
KaiGai Kohei <kaigai@kaigai.gr.jp>