Re: Extracting fields from 'infinity'::TIMESTAMP[TZ]

On 11/17/15 2:09 AM, Vitaly Burovoy wrote:
> I suppose behavior of monotonic values (julian, century, decade,
> isoyear, millennium and year) should be the same as for epoch (which
> obviously also monotonic value).
> Proposed patch has that behavior: ±infinity for epoch, julian,
> century, decade, isoyear, millennium and year; NULL for other fields.

What's the logic behind NULL here? Infinity is infinity, whether it's
minutes or years. It's absolutely NOT the same thing as a NULL
timestamp. I don't see why the normal constraint of minute < 60 should
apply here; infinity isn't a normal number.

My specific fear is that now people will have to do a bunch of IF
timestamp IS NOT NULL THEN ... to get the behavior they need.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com