On Mon, Apr 6, 2009 at 10:49 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Robert Haas <robertmh...@gmail.com> writes: >> Well, I think I was pretty clear about what I was trying to >> accomplish. I think there are more people who care about pg_dump >> output being diffable than there are who need to set ndistinct more >> accurately than 1 ppm and yet not as an integer. > > My, you *are* paranoid about float4 aren't you?
Yes - perhaps unreasonably so. I've had so many bad experiences with floating-point arithmetic that I've stopped trying to understand all of the crazy things that can happen and started just avoiding it like the plague. Long live numeric! > Once you've stored > a given value, it's always going to dump the same. Diffing different > dumps isn't going to be a problem. I concede that it might look > different from what you put in originally, but we make no effort to > guarantee that for DDL anyway. > > (It is true that with pg_dump's default float_extra_digits setting, > outputs from this column might look uglier than they need to. > I don't see anything wrong with having pg_dump forcibly round the > value to five or so digits, though.) So based on this comment and Stephen's remarks, I'm going to assume that I'm succumbing to a fit of unjustified paranoia and re-implement as you suggest. ...Robert -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
