| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: Numeric 508 datatype |
| Date: | 2005-12-02 18:21:05 |
| Message-ID: | 4187.1133547665@sss.pgh.pa.us |
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Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> I am confused by your use of the term "dynamic" range. From what you
> say above that we are just moving from 1000 to 508 for storage, and that
> computational range would still be 4096?
No, computational range would still be on the order of 10^16G ... in the
computational format, the weight is an int. The restriction to 1000
digits was never anything but an artificial limit. (Of course, you
might not have the patience to actually do any arithmetic with that many
digits, but the point is there was a whole lot of headroom before, and
now there won't be.)
regards, tom lane
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