You can read a brief introduction in chapter 19 of my book at:
http://www.postgresql.org/docs/awbook.html
Sounds like you want to use the SPI interface. See the PostgreSQL
manuals for more information.
[ Charset KOI8-R unsupported, converting... ]
> Hello
>
> Can anybody help me?
> The question is: Is it possible to write
> postgres function on C/C++ that selects
> some tables of a database ?
>
> More detailed description.
> Suppose I have database with tables A, B.
> I've written program on C++ with 'main' function
> that reads tables A, B and returns some value, e.g. integer.
> Now I'd like to implement the same actions as postgres
> function (e.g. as .so module).
>
> Is it possible ?
>
> I know:
> 1) How compile C/C++ code to .so
> 2) How to CREATE FUNCTION .....
> I don't know:
> 1) Is it possible to postges function
> to read tables of the database
> 2) If possible, how it should be done?
> 3) Which restrictions applicable to .so
> functions ?
>
> If you know examples those do something similar,
> please let me know.
>
> Any help will be appreciated.
>
> Thanks
>
>
> --
> Vladimir Zolotych gsmith@eurocom.od.ua
>
>
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 853-3000
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