On 14 July 2015 at 13:59, Robert Haas <robertmhaas@gmail.com> wrote:
> On Thu, Jul 9, 2015 at 5:47 PM, Joe Conway <mail@joeconway.com> wrote:
>> On 06/08/2015 02:08 AM, Dean Rasheed wrote:
>>> Actually I think it is fixable just by allowing the CURRENT OF
>>> expression to be pushed down into the subquery through the
>>> security barrier view. The planner is then guaranteed to generate a
>>> TID scan, filtering by any other RLS quals, which ought to be the
>>> optimal plan. Patch attached.
>>
>> This looks good to me. I have tested and don't find any issues with
>> it. Will commit in a day or so unless someone has objections.
>
> Is this fix needed in all versions that support security barrier
> views, or just in 9.5 and 9.6 that have RLS specifically?
>
It's only needed in 9.5 and later for tables with RLS, because WHERE
CURRENT OF isn't supported on views.
Regards,
Dean