Re: Reduce NUMERIC size by 2 bytes, reduce max length to 508

Tom Lane wrote:
> "John D. Burger" <john@mitre.org> writes:
> > Tom Lane wrote:
> >> Hm ... between that, the possible crypto connection, and John's 
> >> personal testimony
> 
> > Just to be clear, this John has yet to use NUMERIC for any 
> > calculations, let alone in that range.
> 
> My mistake, got confused as to who had said what.
> 
> The point remains though: in discussing this proposed patch, we were
> assuming that 10^508 would still be far beyond what people actually
> needed.  Even one or two reports from the list membership of actual
> use of larger values casts a pretty big shadow on that assumption.

Agreed.  I would like to see us hit the big savings first, like merging
cmin/cmax (4 bytes per row) and reducing the varlena header size (2-3
bytes for short values), before we start going after disk savings that
actually limit our capabilites.

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