From: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
To: Petr Jelinek <petr(at)2ndquadrant(dot)com>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Jaime Casanova <jaime(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Tomas Vondra <tv(at)fuzzy(dot)cz>
Subject: Re: TABLESAMPLE patch
Date: 2015-04-18 23:24:52
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On Sat, Apr 18, 2015 at 8:38 PM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> On Fri, Apr 17, 2015 at 10:54 PM, Petr Jelinek wrote:
>> On 10/04/15 06:46, Michael Paquier wrote:
>>> 13) Some regression tests with pg_tablesample_method would be welcome.
>> Not sure what you mean by that.
> I meant a sanity check on pg_tablesample_method to be sure that
> tsminit, tsmnextblock and tsmnexttuple are always defined as they are
> mandatory functions. So the idea is to add a query like and and to be
> sure that it returns no rows:
> SELECT tsmname FROM pg_tablesample_method WHERE tsminit IS NOT NULL OR
> tsmnextblock IS NOT NULL OR tsmnexttuple IS NOT NULL;

Yesterday was a long day. I meant IS NULL and not IS NOT NULL, but I
am sure you guessed it that way already..

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