"Enke, Dr., Michael" <michael(dot)enke(at)wincor-nixdorf(dot)com> wrote:
> I have to find out if a column ( i = 0, …, tupdesc->natts-1 ) is
> part of a primary key but for performance reasons I do not want
> to execute another query via SPI. Is this possible?
You might get some inspiration from looking at this bit of code:
http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=contrib/tcn/tcn.c;h=eb7e1a61a6a1d5c5ed2e840af41410ac4a52418f;hb=master#l127
--
Kevin Grittner
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company