On Wed, Apr 13, 2016 at 1:36 PM, Robert Haas <robertmh...@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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