2010/9/1 KaiGai Kohei <kaigai@ak.jp.nec.com>:
> Right now, it stands on a strict assumption that considers operators
> implemented with built-in functions are safe; it does not have no
> possibility to leak supplied arguments anywhere.
>
> Please note that this patch does not case about a case when
> a function inside a view and a function outside a view are
> distributed into same level and the later function has lower
> cost value.
Without making some attempt to address these two points, I don't see
the point of this patch.
Also, I believe we decided previously do this deoptimization only in
case the user requests it with CREATE SECURITY VIEW.
--
Robert Haas
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