And (indeed) that is exactly the answer that you received [within
DLB_DIG units of precision].
I guess that you will be happier with NUMERIC(precision, scale) because
the results of operations will be closer to what you expect.
Suggested reading:
http://www.physics.ohio-state.edu/~dws/grouplinks/floating_point_math.pd
f
________________________________________
From: pgsql-general-owner@postgresql.org
[mailto:pgsql-general-owner@postgresql.org] On Behalf Of Hengki
Suhartoyo
Sent: Thursday, November 30, 2006 2:56 AM
To: pgsql-general@postgresql.org
Subject: [GENERAL] Float8 precision problem
Hi all,
I got problem in postgrsql 8.0 when subtraction in float8, this is my
query :
select 6.1::float8-6::float8
Result>>> 0.099999999999996
I need the result like natural subtraction is 0.1
Help me please....
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