INCLUDE: Writing constants

INCLUDE: Writing constants

Summary

There are different formats to specify strings, hexadecimal strings, and decimal numbers in DFSORT.The formats for writing character strings, hexadecimal strings, and decimal numbers are shown below -

Character strings - The format for writing a character string is: C’x...x’ where x is an EBCDIC character.

Hexadecimal strings - The format for writing a hexadecimal string is: X’yy...yy’ where yyis a pair of hexadecimal digits.

Decimal numbers - The format for writing a decimal number is: n...n or ±n...n where n is a decimal digit.

Syntax -

INCLUDE COND=(Field1 starting position, Field1 Length, 
	Field1 format, Relational Operator, constant)
Field1 starting position Starting position of field1 to be compared
Field1 Length Length of the field1 to be compared
Field1 format_type Format of the field1 like CH, PD, BI etc,.
Relation operator Relational operators like GT, EQ, NE, LT etc,. 
EQ 		Equal to
NE 		Not equal to
GT 		Greater than
GE 		Greater than or equal to
LT 		Less than
LE 		Less than or equal to
Constant Specifies the constant to be compared

Example -

Scenario - From the below data, filter the records having name Srinivas. The NAME starts from 11th and ends at 28th column in the file.

Input File - MTH.SORT.INPUT

----+----1----+----2----+---3----+---4----+---5---+----6---+---7----+----8
********************************* Top of Data *******************************
00002     Srinivas            Employee                         
test      test                test
00001     pawan kumar         student                       
******************************** Bottom of Data *****************************

Input Record Layout -

01 INPUT-REC.
	05 ID			PIC X(05).
	05 FILLER		PIC X(05).
	05 NAME			PIC X(15).
	05 FILLER		PIC X(05).
	05 OCCUPATION 		PIC X(10).
	05 FILLER		PIC X(40).

JCL -

----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
***************************** Top of Data ******************************
//Job-card
//*******************************************************************
//*                                                           
//* SORT TO WRITE CHARACTERS/NUMERIC IN INCLUDE CONDITION     
//*                                                           
//*******************************************************************
//STEP01   EXEC PGM=SORT                                    
//SORTIN   DD DSN=MTH.SORT.INPUT,DISP=SHR                      
//SORTOUT  DD SYSOUT=*                                     
//SYSOUT   DD SYSOUT=*                                      
//SYSIN    DD *                                        
     SORT FIELDS=COPY                                    
     INCLUDE COND=(11,15,CH,EQ,C'Srinivas')        
/*                                                         
**************************** Bottom of Data *************************

Output -

----+----1----+----2---+----3---+----4---+---5---+----6---+---7---+----8
********************************* TOP OF DATA *******************************
00002     Srinivas            Employee                               
******************************** BOTTOM OF DATA *****************************

Explaining Example -

  1. As a first step, need to get the position of the NAME in the file.
  2. The NAME starting from 11th and ends at 25th column as per the input record layout provided. So the length of NAME field is 15.
  3. As a Second step, need to get the type of the NAME.
  4. From the Input record layout declaration, NAME field is alpha-numeric. So the type is character (CH).
  5. Lastly, the job requirement is to filter the data with the NAME as Srinivas. So the constant is "Srinivas".
  6. The INCLUDE condition for the above requirement with all data gathered is 
    INCLUDE COND=(11,15,CH,EQ,C'Srinivas')
  7. The above condition specifies that include the records where the NAME is "Srinivas" and copied to output file.
  8. The output would have the records which contains the NAME as "Srinivas" from 11th position.