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Re: dividing money by money

Andy Balholm <andy@balholm.com>

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From: Andy Balholm <andy@balholm.com>
To: Peter Eisentraut <peter_e@gmx.net>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Kevin Grittner <Kevin.Grittner@wicourts.gov>, pgsql-hackers@postgresql.org
Date: 2010-07-17T14:20:45Z
Lists: pgsql-hackers 
On Jul 17, 2010, at 3:20 AM, Peter Eisentraut wrote:

> On fre, 2010-07-16 at 10:31 -0400, Tom Lane wrote:
>> The other argument that I found convincing was that if the
>> operator was defined to yield numeric, people might think that
>> the result was exact ... which of course it won't be, either way.
>> Choosing float8 helps to remind the user it's an approximate quotient.
> 
> Why is it approximate?  Aren't money values really integers?

$1.00 / 3.00 = 0.333333333333333333333333333333333333333333333333...