Re: Rounding to even for numeric data type

On 28 March 2015 at 05:16, Andrew Gierth <andrew@tao11.riddles.org.uk> wrote:
>>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes:
>
>  Tom> I think the concern over backwards compatibility here is probably
>  Tom> overblown; but if we're sufficiently worried about it, a possible
>  Tom> compromise is to invent a numeric_rounding_mode GUC, so that
>  Tom> people could get back the old behavior if they really care.
>
> I only see one issue with this, but it's a nasty one: do we really want
> to make all numeric operations that might do rounding stable rather than
> immutable?
>

Yeah, making all numeric functions non-immutable seems like a really bad idea.

Regards,
Dean