Frazer McLean <frazer@frazermclean.co.uk> writes:
> I came across an unexpected comparison (tested on PostgreSQL 9.4 and
> 9.6) for intervals with a large difference in magnitude.
> '1 year'::interval > '32618665 years'::interval;
> Is this a bug?
It looks like the problem is overflow of the result of interval_cmp_value,
because it's trying to compute
=# select '32618665'::int8 * 30 * 86400 * 1000000;
ERROR: bigint out of range
It's not immediately obvious how to avoid that while preserving the same
comparison semantics :-(
regards, tom lane