Merge up to four records to one new record



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Merge up to four records to one new record

Postby puffes » Wed Mar 12, 2014 1:13 am

Hi,
I hope someone can help me with my dilemma. I have a sequential file that is fixed blocked and lrecl=34.
In position 1-15 you find the key. In position 16-19 there is year and position 20-34 is a numeric fieldvalue.
Here's the layout of the file
1122334455AA01 2010000000000011100
1122334455AA01 2011000000000222200
1122334455AA01 2012000000000333300
1122334455AA01 2013000000000044400
1234567890BB02 2010000000000055500
1234567890BB02 2012000000000666600

What I want is that for all unique keys (containing max 4 records in the file) take the value in the record from position 20-34 and put it in a new output record with the condition that if value in position 16-19 should land in:
Value in pos 16-19 Output file position
2010 16-30
2011 32-46
2012 48-62
2013 64-78

So the output file (lrecl=79,recfm=fb) should look like this if you use the six records in the input file above:
1122334455AA01 000000000011100 000000000222200 000000000333300 000000000044400
1234567890BB02 000000000055500 000000000666600

Is it possible to accomplish this?

Kind regards,
Mike
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Re: Merge up to four records to one new record

 

Re: Merge up to four records to one new record

Postby skolusu » Wed Mar 12, 2014 3:41 am

Assuming that the data is already sorted on the key and year, the following DFSORT JCL will give you the desired results


//STEP0100 EXEC PGM=ICETOOL                           
//TOOLMSG  DD SYSOUT=*                                 
//DFSMSG   DD SYSOUT=*                                 
//IN       DD DISP=SHR,DSN=Your Input FB 34 Byte file 
//OUT      DD SYSOUT=*                                 
//TOOLIN   DD *                                       
 SPLICE FROM(IN) TO(OUT) ON(1,15,CH) WITHANY     -
 WITH(32,15) WITH(48,15) WITH(64,15) USING(CTL1)       
//*                                                   
//CTL1CNTL DD *                                       
  OPTION COPY                                         
  INREC IFOUTLEN=79,IFTHEN=(WHEN=INIT,                 
  BUILD=(1,15,81:20,15,X,SEQNUM,1,ZD,RESTART=(1,15))),
  IFTHEN=(WHEN=(97,1,ZD,EQ,1),OVERLAY=(16:81,15)),     
  IFTHEN=(WHEN=(97,1,ZD,EQ,2),OVERLAY=(32:81,15)),     
  IFTHEN=(WHEN=(97,1,ZD,EQ,3),OVERLAY=(48:81,15)),     
  IFTHEN=(WHEN=(97,1,ZD,EQ,4),OVERLAY=(64:81,15))     
//*
Kolusu - DFSORT Development Team (IBM)
DFSORT is on the Web at:
www.ibm.com/storage/dfsort
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