Re: Decimal values in

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Masterprojekt Naumann1 <mpws2013n1(at)gmail(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Decimal values in
Date: 2014-02-17 15:50:16
Message-ID: 20140217155016.GN6342@eldon.alvh.no-ip.org
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Masterprojekt Naumann1 escribió:
> Dear Dev-List,
>
> inside execProcnode.c's ExecProcNode method we want to extract the value of
> a tuple for a specific attribute. This works great for integers and
> strings, but we are not able to figure out how to do this for floating
> point numbers. Below is some example code snippet to show our problem:

"DECIMAL_OID" (you probably mean NUMERICOID) points to datatype numeric,
which is not floating point but a variable length datatype with its own
special encoding for storage. If you want floating point you need
FLOAT4OID and FLOAT8OID, and columns created with types float and
"double precision", respectively.

--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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