Convert Date DDMMMYY to MM/DD/YY Format

DFSORT doesn’t have a built-in function for Convert Date – interpreting the month field of date in DDMMMYY formats as numeric values but you can use INREC and OUTREC statements to translate the month back and forth. Let’s take an example assuming that the DDMMMYY date is in positions 1-7.

BUILD=(3,3, 
       3,3, CHANGE=(2,C'Jan',C'01',C'Feb',C'02',C'Mar',C'03',C'Apr',
C'04',C'May',C'05',C'Jun',C'06',C'Jul',C'07',C'Aug',C'08',
C'Sep',C'09',C'Oct',C'10',C'Nov',C'11',C'Dec',C'12'), 
        1,2,              —> DD
        6,2,              —> YY
        8,73)             —> 73 is length to end of record
SORT FIELDS=(4,6,Y2W,D)   —> Sort MMDDYY using Century Window 
OUTREC BUILD=(6,2,        —> DD 
              1,3,        —> MON 
              8,2,        —> YY 
              10,73)      —> Rest of record

You use p, m,CHANGE=(v,find,set,…) to give the position and length of the input field, the length of the output field, and the “table” consisting of pairs of find constants, and set constants or set fields. The result of CHANGE is 

 Jan | 01
 Feb | 02
 Mar | 03
 Apr | 04
 May | 05
 Jun | 06
 Jul | 07
 Aug | 08
 Sep | 09
 Oct | 10
 Nov | 11
 Dec | 12 

Example of Convert Date – DDMMMYY to MM/DD/YY Format

Concert input record’s date format from DD-MMM-YY (01-JAN-21) to MM/DD/YYYY (01/01/2021) using IFTHEN

//STEP0100 EXEC PGM=SORT     
 //SYSOUT   DD SYSOUT=*         
 //SORTIN   DD *              
 ----+----1----+----2----+----3----+----4----+----5
 XXXXXXXXXXXXXXXXX~01-JAN-21~XXXXXXXXXXX      
 //SORTOUT  DD SYSOUT=*          
 //SYSIN    DD *                
   OPTION COPY,Y2PAST=1980   
   INREC IFOUTLEN=80,IFTHEN=(WHEN=INIT,
         OVERLAY=(81:22,3,19,2,26,2)),   
   IFTHEN=(WHEN=INIT,FINDREP=(STARTPOS=81,   
   INOUT=(C'JAN',C'01',C'FEB',C'02',C'MAR',C'03',C'APR',
    C'04',C'MAY',C'05',C'JUN',C'06',C'JUL',C'07',C'AUG',
    C'08',C'SEP',C'09',C'OCT',C'10',C'NOV',C'11',C'DEC',
    C'12'))),
   IFTHEN=(WHEN=INIT,OVERLAY=(40:81,6,Y2W(/)))     
 //*

Output: XXXXXXXXXXXXXXXXX~01-JAN-21~XXXXXXXXXXX01/01/21

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