diff options
Diffstat (limited to 'src/include/postgres_ext.h')
| -rw-r--r-- | src/include/postgres_ext.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/include/postgres_ext.h b/src/include/postgres_ext.h index 18be70ea922..a5696f2a020 100644 --- a/src/include/postgres_ext.h +++ b/src/include/postgres_ext.h @@ -2,10 +2,9 @@ * * postgres_ext.h * - * This file contains declarations of things that are visible - * external to Postgres. For example, the Oid type is part of a - * structure that is passed to the front end via libpq, and is - * accordingly referenced in libpq-fe.h. + * This file contains declarations of things that are visible everywhere + * in PostgreSQL *and* are visible to clients of frontend interface libraries. + * For example, the Oid type is part of the API of libpq and other libraries. * * Declarations which are specific to a particular interface should * go in the header file for that interface (such as libpq-fe.h). This @@ -16,7 +15,7 @@ * use header files that are otherwise internal to Postgres to interface * with the backend. * - * $Id: postgres_ext.h,v 1.5 2000/12/22 21:36:09 tgl Exp $ + * $Id: postgres_ext.h,v 1.6 2001/02/10 02:31:28 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -29,6 +28,8 @@ */ typedef unsigned int Oid; +#define InvalidOid ((Oid) 0) + #define OID_MAX UINT_MAX /* you will need to include <limits.h> to use the above #define */ |