| From: | Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com> |
|---|---|
| To: | Sudheer H R <sudheer(dot)hr(at)tekenlight(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Question about how to handle numeric (decimal) data types while using libpq |
| Date: | 2021-07-06 12:29:37 |
| Message-ID: | e3edc85a-3b03-8564-439b-01509b47d637@enterprisedb.com |
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| Lists: | pgsql-general |
On 06.07.21 13:04, Sudheer H R wrote:
> I am trying to use libpq for interfacing with PostgreSQL from a C/C++ based application.
>
> I have tried to use binary format of data for both sending and receiving data to and from server (resultFormat = 1).
>
> As I understand most binary types, int, float etc… are encoded in bing-endian byte order and they can be converted to appropriate host specific memory representations.
>
> However NUMERIC datatype is a more complex structure with multiple ints and pointers.
>
> I would like to know if there are published library functions that convert (to and from) NUMERIC field to say, long double datatype
There is a third-party library called libpqtypes out there that adds
support for handling specific types on the libpq side. But I'm not sure
how up to date it is.
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