DFSORT OUTFIL Selecting and sampling by RRN

DFSORT OUTFIL: Creating multiple identical copies DFSORT OUTFIL: Including, omitting Records

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OUTFIL statement is used to copy, sort or merge input records by using RRN.

RRN stands for relative record number.

When performing copy, sort or merge operations, the resulting records have implicit relative record.

The implicit relative record numbers are starting from 1 for the first record and n for the last record (n is the total number of records).


Syntax:

SORT FILEDS=(Starting position, length, data-format, A/D)
	OUTFIL FNAMES=DDNAMEn, STARTREC=starting RRN, ENDREC= Ending RRN

Name Description
DDNAMEnDDNAME is eight character’s name that representing the actual dataset in JCL.
STARTREC=starting RRNSpecifies the starting record RRN from where the copy starts
ENDREC=Ending RRNSpecifies the ending record RRN where the copy ends

Example: -

Create three output files like below.

1,4,7,10 records to file1

4,8 records to file2

2,3,5,6,8,9 records to file3


Input File: MTHUSER.SORT.INPUT01 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
00001     student1           dept1          560                                 
00003     student3           dept2          520                                 
00004     student4           dept1          540                                 
00005     student5           dept2          500                                 
00002     student2           dept3          510                                 
00006     student6           dept3          550                                 
00008     student8           dept1          530                                 
00007     student7           dept3          510                                 
00009     student9           dept2          520                                 
00010     student10          dept2          505                                 
******************************** Bottom of Data ********************************

Job:

000100 //Jobcard 
000400 //*                                                                     
000400 //*                                                                     
000500 //**********************************************************************
000600 //*                                                                     
001100 //STEP01   EXEC PGM=SORT                                                
001300 //SORTIN   DD DSN=MTHUSER.SORT.INPUT01,DISP=SHR                    
001800 //OUTPUT1  DD DSN=MTHUSER.SORT.OUTPT01,                            
001810 //             SPACE=(CYL,(1,1),RLSE),DCB=*.SORTIN,                     
001820 //             DISP=(NEW,CATLG,DELETE)                                  
001900 //OUTPUT2  DD DSN=MTHUSER.SORT.OUTPT02,                            
002000 //             SPACE=(CYL,(1,1),RLSE),DCB=*.SORTIN,                     
002100 //             DISP=(NEW,CATLG,DELETE)                                  
002200 //OUTPUT3  DD DSN=MTHUSER.SORT.OUTPT03,                            
002300 //             SPACE=(CYL,(1,1),RLSE),DCB=*.SORTIN,                     
002310 //             DISP=(NEW,CATLG,DELETE)                                  
002400 //SYSOUT   DD SYSOUT=*                                                  
002410 //SYSIN    DD *                                                         
002411      SORT FIELDS=(1,5,ZD,A)                                             
002420      OUTFIL FNAMES=OUTPUT1,SAMPLE=3                                     
002430      OUTFIL FNAMES=OUTPUT2,STARTREC=4,SAMPLE=4,ENDREC=10                
002440      OUTFIL FNAMES=OUTPUT3,STARTREC=2,SAMPLE=(3,2)                      
003500 /*                                                                      
****** **************************** Bottom of Data ****************************

Output File: MTHUSER.SORT.OUTPT01 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
00001     student1           dept1          560                                 
00004     student4           dept1          540                                 
00007     student7           dept3          510                                 
00010     student10          dept2          505                                 
******************************** Bottom of Data ********************************

File: MTHUSER.SORT.OUTPT02 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
00004     student4           dept1          540                                 
00008     student8           dept1          530                                 
******************************** Bottom of Data ********************************

File: MTHUSER.SORT.OUTPT03 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
00002     student2           dept3          510                                 
00003     student3           dept2          520                                 
00005     student5           dept2          500                                 
00006     student6           dept3          550                                 
00008     student8           dept1          530                                 
00009     student9           dept2          520                                 
******************************** Bottom of Data ********************************

Explaining Solution:

  1. SORT FIELDS=(1,5,ZD,A) - sort all outputs in ascending order based on the ZD value from 1 to 5 positions.

  2. OUTFIL FNAMES=OUTPUT1,SAMPLE=3 - Copies 1st record and picked up every third record from the current record. The output1 file contains 1, 4,7,10 records.

  3. OUTFIL FNAMES=OUTPUT2,STARTREC=4,SAMPLE=4,ENDREC=10 - Copy starts from 4th record and picked up every fourth record from the current record. The output2 file contains 4,8 records.

  4. OUTFIL FNAMES=OUTPUT3,STARTREC=2,SAMPLE=(3,2) - Copy starts from 2nd record and ignores every third record after copying two records along with current record. The output3 file contains 2,3,5,6,8,9 records.

DFSORT OUTFIL: Creating multiple identical copies DFSORT OUTFIL: Including, omitting Records

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