Re: xlog location arithmetic

Magnus Hagander <magnus@hagander.net> writes:
>> At this point, my question is: do we want to support the lsn data type idea or
>> a basic function that implements the difference between LSNs?

> Personally I think a function is enough - it solves the only case that
> I've actually seen. But a datatype would be a more complete solution,
> of course - but it seems a bit of an overkill to me. Not really sure
> which way we should go - I was hoping somebody else would comment as
> well..

I too think a datatype is overkill, if we're only planning on providing
one function.  Just emit the values as numeric and have done.
        regards, tom lane