Summary -
In this topic, we described about the Include Writing Constants with detailed example.
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)
Let’s discuss in detail.
name | Description |
---|---|
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,.
|
Constant | Specifies the constant to be compared |
Example:
From the below data, filter the records having name Srinivas. The NAME starts from 11th and ends at 28th column in the file.
Input: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).
Job:
000100 //Jobcard
000400 //*******************************************************************
000500 //*
000510 //* SORT TO WRITE CHARACTERS/NUMERIC IN INCLUDE CONDITION
000520 //*
000600 //*******************************************************************
001100 //STEP01 EXEC PGM=SORT
001300 //SORTIN DD DSN=MTH.SORT.INPUT,DISP=SHR
001800 //SORTOUT DD SYSOUT=*
001900 //SYSOUT DD SYSOUT=*
002400 //SYSIN DD *
002410 SORT FIELDS=COPY
002420 INCLUDE COND=(11,15,CH,EQ,C'Srinivas')
003400 /*
****** **************************** Bottom of Data *************************
Output:
----+----1----+----2---+----3---+----4---+---5---+----6---+---7---+----8
********************************* TOP OF DATA *******************************
00002 Srinivas Employee
******************************** BOTTOM OF DATA *****************************
Explaining Solution:
- As a first step, need to get the position of the NAME in the file.
- 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.
- As a Second step, need to get the type of the NAME.
- From the Input record layout declaration, NAME field is alpha-numeric. So the type is character (CH).
- Lastly, the job requirement is to filter the data with the NAME as Srinivas. So the constant is "Srinivas".
- The INCLUDE condition for the above requirement with all data gathered is
INCLUDE COND=(11,15,CH,EQ,C'Srinivas')
- The above condition specifies that include the records where the NAME is "Srinivas" and copied to output file.
- The output would have the records which contains the NAME as "Srinivas" from 11th position.