1 /*-------------------------------------------------------------------------
2  *
3  * sysattr.h
4  *	  POSTGRES system attribute definitions.
5  *
6  *
7  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
8  * Portions Copyright (c) 1994, Regents of the University of California
9  *
10  * src/include/access/sysattr.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef SYSATTR_H
15 #define SYSATTR_H
16 
17 
18 /*
19  * Attribute numbers for the system-defined attributes
20  */
21 #define SelfItemPointerAttributeNumber			(-1)
22 #define MinTransactionIdAttributeNumber			(-2)
23 #define MinCommandIdAttributeNumber				(-3)
24 #define MaxTransactionIdAttributeNumber			(-4)
25 #define MaxCommandIdAttributeNumber				(-5)
26 #define TableOidAttributeNumber					(-6)
27 #define FirstLowInvalidHeapAttributeNumber		(-7)
28 
29 #endif							/* SYSATTR_H */
30