Re: using custom scan nodes to prototype parallel sequential scan

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: using custom scan nodes to prototype parallel sequential scan
Date: 2014-11-17 16:24:17
Message-ID: CA+U5nM+Jh9S5S9GJp_2ksuT7yfxqXoA=9Q5VfSt4eKrTsf7-oA@mail.gmail.com
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On 17 November 2014 16:01, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:

> I still don't know what CONTAINS NO SQL means.

It's a function marking that would indicate we aren't allowed to take
snapshots or run SQL.

I think you should publish the scheme for marking functions as safe
for parallelism, so we can judge that.

--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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