From: | Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Thom Brown <thom(at)linux(dot)com>, Kohei Kaigai <Kohei(dot)Kaigai(at)emea(dot)nec(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: [v9.2] Fix Leaky View Problem |
Date: | 2011-09-26 20:06:44 |
Message-ID: | CADyhKSVimj7xG6T4rqMp9roVvPvsO+dGJZqn=hei5VjdE_SewA@mail.gmail.com |
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2011/9/26 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp> writes:
>> Sorry, are you saying the current (in other words, rte->security_barrier
>> stores the state of reloption) approach is not a good idea?
>
> Yes. I think the same as Robert: the way to handle this is to store it
> in RelOptInfo for the duration of planning, and pull it from the
> catalogs during planner startup (cf plancat.c).
>
Hmm. If so, it seems to me worthwhile to investigate an alternative
approach that stores relation-id of the view on rte->relid if rtekind is
RTE_SUBQUERY and pull the "security_barrier" flag from the catalog
during planner stage.
Thanks,
--
KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>
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