/*------------------------------------------------------------------------- * * sysattr.h * POSTGRES system attribute definitions. * * * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/access/sysattr.h * *------------------------------------------------------------------------- */ #ifndef SYSATTR_H #define SYSATTR_H /* * Attribute numbers for the system-defined attributes */ #define SelfItemPointerAttributeNumber (-1) #define MinTransactionIdAttributeNumber (-2) #define MinCommandIdAttributeNumber (-3) #define MaxTransactionIdAttributeNumber (-4) #define MaxCommandIdAttributeNumber (-5) #define TableOidAttributeNumber (-6) #define FirstLowInvalidHeapAttributeNumber (-7) #endif /* SYSATTR_H */