Annotation of win32/sql/pgsql/include/postgres_ext.h, revision 1.1
1.1 ! parser 1: /*-------------------------------------------------------------------------
! 2: *
! 3: * postgres_ext.h
! 4: *
! 5: * This file contains declarations of things that are visible everywhere
! 6: * in PostgreSQL *and* are visible to clients of frontend interface libraries.
! 7: * For example, the Oid type is part of the API of libpq and other libraries.
! 8: *
! 9: * Declarations which are specific to a particular interface should
! 10: * go in the header file for that interface (such as libpq-fe.h). This
! 11: * file is only for fundamental Postgres declarations.
! 12: *
! 13: * User-written C functions don't count as "external to Postgres."
! 14: * Those function much as local modifications to the backend itself, and
! 15: * use header files that are otherwise internal to Postgres to interface
! 16: * with the backend.
! 17: *
! 18: * $Id: postgres_ext.h,v 1.1 2001/07/30 15:32:18 parser Exp $
! 19: *
! 20: *-------------------------------------------------------------------------
! 21: */
! 22:
! 23: #ifndef POSTGRES_EXT_H
! 24: #define POSTGRES_EXT_H
! 25:
! 26: /*
! 27: * Object ID is a fundamental type in Postgres.
! 28: */
! 29: typedef unsigned int Oid;
! 30:
! 31: #define InvalidOid ((Oid) 0)
! 32:
! 33: #define OID_MAX UINT_MAX
! 34: /* you will need to include <limits.h> to use the above #define */
! 35:
! 36:
! 37: /*
! 38: * NAMEDATALEN is the max length for system identifiers (e.g. table names,
! 39: * attribute names, function names, etc.)
! 40: *
! 41: * NOTE that databases with different NAMEDATALEN's cannot interoperate!
! 42: */
! 43: #define NAMEDATALEN 32
! 44:
! 45: #endif
E-mail: