Re: TABLESAMPLE patch

On 16/12/14 08:43, Jaime Casanova wrote:
> On Wed, Dec 10, 2014 at 6:24 PM, Petr Jelinek <petr@2ndquadrant.com> wrote:
>> Hello,
>>
>> Attached is a basic implementation of TABLESAMPLE clause. It's SQL standard
>> clause and couple of people tried to submit it before so I think I don't
>> need to explain in length what it does - basically returns "random" sample
>> of a table using a specified sampling method.
>>
>
> Tablesample, yay!
>
> Sadly when the jsonb functions patch was committed a few oids where
> used, so you should update the ones you are using. at least to make
> the patch easier for testing.

Will do.

>
> The test added for this failed, attached is the diff. i didn't looked
> up why it failed
>

It isn't immediately obvious to me why, will look into it.


> Finally, i created a view with a tablesample clause. i used the view
> and the tablesample worked, then dumped and restored and the
> tablesample clause went away... actually pg_get_viewdef() didn't see
> it at all.
>

Yeah, as I mentioned in the submission the ruleutils support is not 
there yet, so that's expected.

> will look at the patch more close tomorrow when my brain wake up ;)
>

Thanks!



--  Petr Jelinek                  http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training &
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