Обсуждение: converting numeric to string in postgres code

Hello

2013/5/28 Szymon Guz <mabewlun@gmail.com>:
> Hi,
> while hacking on some Postgres code I've found a problem.
>
> I need to convert numeric to string. I've got datum with numeric inside, so
> I'm getting it like:
>
> Numeric *numeric = DatumGetNumeric(d);
>
> but later I need to have string (most probably: const char *). I've found a
> couple of different ways for doing that, but I'm not aware of side effects.
>
> Which function/macro should I use?
>

There is a numeric_out function, you can use it or look on their source code

result = DatumGetCString(DirectFunctionCall1(numeric_out, d));

Regards

Pavel






> thanks,
> Szymon