On 2013-01-12 15:13:51 -0500, Tom Lane wrote:
> Andres Freund <andres@2ndquadrant.com> writes:
> > On 2013-01-12 14:29:38 -0500, Tom Lane wrote:
> >> I think that the alternative most likely to succeed is to consider any
> >> change in the active value of search_path as forcing replanning of
> >> cached plans.
>
> > I guess it wouldn't really be feasible to keep the search path used to
> > plan a query in its cached form and check that it fits the one currently
> > used on every use of the cached plan?
>
> Actually that's exactly what I meant: every time we arrive at a query
> with a cached plan, check to see if the active search_path value is the
> same as what it was when we made the cached plan, and replan if not.
Okay. I was afraid it would add noticeable overhead to stuff like
plpgsql... Maybe would lower that by having a "search_path" generation
counter that gets increased everytime it gets changed but that seems a
bit too complicated.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
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