From: Milen A. Radev <milen@radev.net>
To: pgsql-sql@postgresql.org
Subject: Re: Floating point type to store numbers
Date: Wed, 18 Apr 2007 01:09:53 +0300
Message-ID: <f03gj7$ag7$1@sea.gmane.org> (raw)
In-Reply-To: <20944.63.118.86.10.1176842180.squirrel@www.88thstreet.com>
References: <4838.63.118.86.10.1176836034.squirrel@www.88thstreet.com>
<f03636$bat$1@sea.gmane.org>
<20944.63.118.86.10.1176842180.squirrel@www.88thstreet.com>
Radhika Sambamurti написа:
>> I believe the manual is quite clear on that one (
>> http://www.postgresql.org/docs/current/static/datatype-numeric.html#DATATYPE-FLOAT)
>> :
>>
>> " - If you require exact storage and calculations (such as for monetary
>> amounts), use the numeric type instead."
>>
>>
>> So if you decide to use floats after this warning you are on your own.
>
> Well, actually the manual is not quite clear on this one.
Given your requirements - "an application which is used for trading and
back office operations." and "our monetary fields...", I still believe
the manual is crystal clear.
> It says quite clearly that very very small values approaching zero and
> very very large values will be problematic. But I am not calculating the
> distance to the moon. I need values to be accurate upto the 6th decimal
> place, and was wondering if people use floating point types for this sort
> of thing.
--
Milen A. Radev
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To: pgsql-sql@postgresql.org
Cc: milen@radev.net
Subject: Re: Floating point type to store numbers
In-Reply-To: <f03gj7$ag7$1@sea.gmane.org>
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