Constants

A constant can be a decimal number (n, +n, -n), character string (C'xx...x'), or hexadecimal string (X'yy...yy').

The current date can be used as a decimal number (DATE1P, &DATE1P, DATE2P, &DATE2P, DATE3P, &DATE3P) or character string (DATE1, &DATE1, DATE1(c), &DATE1(c), DATE2, &DATE2, DATE2(c), &DATE2(c), DATE3, &DATE3, DATE3(c), &DATE3(c), DATE4, &DATE4, DATE5, &DATE5).

A future date can be used as a decimal number (DATE1P+d, &DATE1P+d, DATE2P+m, &DATE2P+m, DATE3P+d, &DATE3P+d) or character string (DATE1+d, &DATE1+d, DATE1(c)+d, &DATE1(c)+d, DATE2+m, &DATE2+m, DATE2(c)+m, &DATE2(c)+m, DATE3+d, &DATE3+d, DATE3(c)+d, &DATE3(c)+d).

A past date can be used as a decimal number (DATE1P-d, &DATE1P-d, DATE2P-m, &DATE2P-m, DATE3P-d, &DATE3P-d) or character string (DATE1-d, &DATE1-d, DATE1(c)-d, &DATE1(c)-d, DATE2-m, &DATE2-m, DATE2(c)-m, &DATE2(c)-m, DATE3-d, &DATE3-d, DATE3(c)-d, &DATE3(c)-d).

The different constants are explained in detail in the following table. Permissible comparisons between compare fields and constants are shown in Table 1.

Table 1. Permissible Field-to-Constant Comparisons for INCLUDE/OMIT
Permissible Field-to-Constant Comparisons for INCLUDE/OMITField Format	Self-Defining Term
	Decimal Number	Character String	Hexadecimal String
BI	X	X	X
CH		X	X
ZD	X
PD	X
PD0			X
FI	X
AC		X	X
ASL	X
AST	X
CSF or FS	X
UFF	X
SFF	X
CSL or LS	X
CST or TS	X
CLO or OL	X
CTO or OT	X
AQ		X	X
D2	X	X	X
Note: D2 field formats are user-defined.