Martin Varady <martin(dot)varady(at)gmail(dot)com> writes:
> I got what you would expect but still doesn't work. It is the enterpriseDB
> version we bought for Oracle to Postgres conversions.
> "EnterpriseDB 10.4.9, compiled by Visual C++ build 1800, 64-bit"
Well, you should have a word with EDB then, but what it sounds like
is they install a nondefault date - date operator, or possibly remove
PG's standard one so that timestamp - timestamp gets chosen instead.
Which is probably reasonable if your goal is compatibility with
Oracle.
regards, tom lane