postgresql/src/include/postgres_ext.h

37 lines
1.2 KiB
C

/*-------------------------------------------------------------------------
*
* 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.
*
* Declarations which are specific to a particular interface should
* go in the header file for that interface (such as libpq-fe.h). This
* file is only for fundamental Postgres declarations.
*
* User-written C functions don't count as "external to Postgres."
* Those function much as local modifications to the backend itself, and
* use header files that are otherwise internal to Postgres to interface
* with the backend.
*
* $Id: postgres_ext.h,v 1.4 1999/06/04 21:12:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef POSTGRES_EXT_H
#define POSTGRES_EXT_H
typedef unsigned int Oid;
/* NAMEDATALEN is the max length for system identifiers (e.g. table names,
* attribute names, function names, etc.)
*
* NOTE that databases with different NAMEDATALEN's cannot interoperate!
*/
#define NAMEDATALEN 32
#endif