Re: Calculations With NUMERIC Data Type In C Program

From: Michael Meskes <meskes(at)postgresql(dot)org>
To: asergioz(at)bol(dot)com(dot)br
Cc: PostgreSQL Interfaces <pgsql-interfaces(at)postgresql(dot)org>
Subject: Re: Calculations With NUMERIC Data Type In C Program
Date: 2001-06-24 12:39:03
Message-ID: 20010624143903.A30948@feivel.fam-meskes.de
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On Sat, Jun 23, 2001 at 06:16:48PM -0300, asergioz wrote:
> ...
> PostgreSQL. I need to perform several
> calculations, in a C program, with
> data returned from lots of fields of
> the NUMERIC (17, 7)
> data type.
> ...
> EXEC SQL BEGIN DECLARE SECTION;
> numeric(17, 7) var_1;
> numeric(17, 7) var_2;
> long key = 123;
> EXEC SQL END DECLARE SECTION;

I do not know that there is a numeric datatype in C. The datatype's given in
the declare section have to be C types.

> Please, does the ECPG interface work
> with variables of the NUMERIC data
> type, as shown above?

If you can map them to a C datatype yes.

> If not, what are the alternatives?

This is the same problem you run into with any embedded SQL preprocessor
there is.

Michael
--
Michael Meskes
Michael(at)Fam-Meskes(dot)De
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