On Wed, Jan 25, 2012 at 11:30:49AM -0500, Tom Lane wrote:
> hubert depesz lubaczewski <depesz@xxxxxxxxxx> writes:
> > anyway - the point is that in \df date_part(, timestamp) says it's
> > immutable, while it is not.
>
> Hmm, you're right. I thought we'd fixed that way back when, but
> obviously not. Or maybe the current behavior of the epoch case
> postdates that.
is there a chance something will happen with/about it?
preferably I would see extract( epoch from timestamp ) to be really
immutable, i.e. (in my opinion) it should treat incoming data as UTC
- for epoch calculation.
Alternatively - perhaps epoch extraction should be moved to specialized
function, which would have swapped mutability:
get_epoch(timestamptz) would be immutable
while
get_epoch(timestamp) would be stable
Best regards,
depesz
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