Re: Getting my Database name in a C Extension

On 03/10/14 10:23, Michael Paquier wrote:

> On Fri, Oct 3, 2014 at 4:57 PM, Albe Laurenz <laurenz(dot)albe(at)wien(dot)gv(dot)at
> <mailto:laurenz(dot)albe(at)wien(dot)gv(dot)at>> wrote:
> > Cedric Berger wrote:
> >>>> 1) What is the easiest way to get that directly in C?
> >>>
> >>> The usual locution is "get_database_name(MyDatabaseId)".
> >>
> >> Ok, but then how do I find "MyDatabaseId" in, say,
> >> a BeginForeignScan() or GetForeignRelSize() FDW callback?
> >
> > It is a global, all you should have to do is
> > #include "miscadmin.h"
> When looking for a global variable, a command like that is generally useful:
> $ git grep MyDatabaseId -- *.h
> src/include/access/xact.h: Oid dbId;
> /* MyDatabaseId */
> src/include/miscadmin.h:extern PGDLLIMPORT Oid MyDatabaseId;

Thanks a lot!

I didn't think 'MyDatabaseId' was a real variable name...

Cedric