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On 07/14/2015 12:40 PM, Dean Rasheed wrote:
> 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.
Pushed.
- --
Joe Conway
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