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Re: Odd system-column handling in postgres_fdw join pushdown patch - Mailing list pgsql-hackers

From Robert Haas
Subject Re: Odd system-column handling in postgres_fdw join pushdown patch
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Msg-id CA+TgmoZUKfzP_tfWUNvGLsdLWCBYw+-U6S69GD+ED1y86H4AoQ@mail.gmail.com
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In response to Re: Odd system-column handling in postgres_fdw join pushdown patch  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: Odd system-column handling in postgres_fdw join pushdown patch  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Wed, Apr 13, 2016 at 1:36 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> I tend to favor zeroes rather than NULLs, because that's what we
> typically use to represent an invalid value of those types, and I'm
> not aware of any current case where those values are NULL.

In fact, see heap_attisnull.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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