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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Lists: | pgsql-hackers |
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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