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Matching fields in the same file

 
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psmadhusudhan
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Joined: 28 Nov 2006
Posts: 143
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PostPosted: Fri Aug 31, 2007 2:59 am    Post subject: Matching fields in the same file Reply with quote
I have one input file of record length 80.
Treat first 3 bytes as Field1. Treat 51-80 bytes as Field2.
First 3 bytes will surely be occupied.
Now this Field1 will be present anywhere in Field2 for example at
51-53 or 67-69 or 78-80 or any 3bytes in 51-80 bytes.

Now my output file should contain all the input records
in which Field1 is present in Field2.

For example
Input File:
Code:
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
| |                                            |                               |
Field1                                         -------------Field2--------------
POL                                             POL
COV                                                                         COV
CLT
MED                                                   MED


Output File:
Code:
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
| |                                            |                               |
Field1                                         -------------Field2--------------
POL                                             POL
COV                                                                         COV
MED                                                   MED


Can anybody please help me in achieving this using DFSORT/ICETOOL.
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kolusu
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PostPosted: Fri Aug 31, 2007 4:05 am    Post subject: Reply with quote
psmadhusudhan,

try this untested code

Code:

//SYSIN    DD *                         
  SORT FIELDS=COPY                       
  INCLUDE COND=(01,03,CH,EQ,51,03,CH,OR,
                01,03,CH,EQ,52,03,CH,OR,
                01,03,CH,EQ,53,03,CH,OR,
                01,03,CH,EQ,54,03,CH,OR,
                01,03,CH,EQ,55,03,CH,OR,
                01,03,CH,EQ,56,03,CH,OR,
                01,03,CH,EQ,57,03,CH,OR,
                01,03,CH,EQ,58,03,CH,OR,
                01,03,CH,EQ,59,03,CH,OR,
                01,03,CH,EQ,60,03,CH,OR,
                01,03,CH,EQ,61,03,CH,OR,
                01,03,CH,EQ,62,03,CH,OR,
                01,03,CH,EQ,63,03,CH,OR,
                01,03,CH,EQ,64,03,CH,OR,
                01,03,CH,EQ,65,03,CH,OR,
                01,03,CH,EQ,66,03,CH,OR,
                01,03,CH,EQ,67,03,CH,OR,
                01,03,CH,EQ,68,03,CH,OR,
                01,03,CH,EQ,69,03,CH,OR, 
                01,03,CH,EQ,70,03,CH,OR, 
                01,03,CH,EQ,71,03,CH,OR, 
                01,03,CH,EQ,72,03,CH,OR, 
                01,03,CH,EQ,73,03,CH,OR, 
                01,03,CH,EQ,74,03,CH,OR, 
                01,03,CH,EQ,75,03,CH,OR, 
                01,03,CH,EQ,76,03,CH,OR, 
                01,03,CH,EQ,77,03,CH,OR, 
                01,03,CH,EQ,78,03,CH)     
/*


Kolusu
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psmadhusudhan
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PostPosted: Fri Aug 31, 2007 8:08 am    Post subject: Reply with quote
Thanks Kolusu.

This code is working. I want to know can it be shortened using anyother logic as I have restriction on line of code and also my field lengths may change regularly.
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vivek1983
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Joined: 20 Apr 2006
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PostPosted: Fri Aug 31, 2007 9:23 am    Post subject: Reply with quote
psmadhusudhan,

I have a suggestion:

1. Consider 2 steps to get the desired output.
2. In the first step write FIELD1 to a temporary file (say &&T1) using
Code:

       //SYSIN    DD *       
        SORT FIELDS=COPY   
        OUTREC FIELDS=(1,3)
     /*

3. In the second step you can compare this temparory file with the original file and write the matched records. There are number of techniques used and can be searched in this forum.

Regards,
Vivek G
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kolusu
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PostPosted: Fri Aug 31, 2007 10:38 am    Post subject: Reply with quote
Quote:

This code is working. I want to know can it be shortened using anyother logic as I have restriction on line of code and also my field lengths may change regularly.


psmadhusudhan,

Hmm You can use SYMNAMES to specify the relative positions and use them in the include conditions. If your field-2 data is all spaces with embedded strings then we can use SQZ/JFY functions and get the string to a constant position and compare that string.

For ex: if your field-2 had all spaces with strings POL, COV & MED somewhere in between then you can use these control cards to get the desired results
Code:

//SYSIN    DD *                             
  SORT FIELDS=COPY                           
  INREC OVERLAY=(81:51,29,JFY=(SHIFT=LEFT)) 
  OUTFIL INCLUDE=(1,3,CH,EQ,81,3,CH),       
  OUTREC=(01,80)                             


Vivek,

Your approach will not work as the string to be compared is not a fixed positions

Kolusu
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psmadhusudhan
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PostPosted: Mon Sep 03, 2007 12:02 am    Post subject: Reply with quote
Kolusu

Sorry for late reply. I had just checked the code, it is working fine.

Quote:
if your field-2 had all spaces with strings POL, COV & MED somewhere in between then you can use these control cards to get the desired results


I want to know how to change the code if there are no spaces.
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kolusu
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PostPosted: Mon Sep 03, 2007 3:43 pm    Post subject: Reply with quote
Quote:

I want to know how to change the code if there are no spaces.


psmadhusudhan,

AFAIK sort products do NOT have the ability to perform what you asked for.

Kolusu
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Frank Yaeger
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PostPosted: Mon Sep 03, 2007 5:54 pm    Post subject: Reply with quote
psmadhusudhan,

If the input is really as described with at most one 3-byte field2 value in each record, then you can use this DFSORT job to do what you want:

Code:

//S1    EXEC  PGM=ICEMAN
//SYSOUT    DD  SYSOUT=*
//SORTIN DD DSN=...  input file
//SORTOUT DD DSN=...  output file
//SYSIN    DD    *
  OPTION COPY
  INREC PARSE=(%01=(ABSPOS=51,FIXLEN=3,STARTAT=NONBLANK)),
    OVERLAY=(81:%01)
  OUTFIL INCLUDE=(1,3,CH,EQ,81,3,CH),BUILD=(1,80)
/*

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DFSORT is on the Web at:
www.ibm.com/storage/dfsort
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psmadhusudhan
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PostPosted: Mon Sep 03, 2007 10:46 pm    Post subject: Reply with quote
Frank

I had tried your code with following input file

Code:
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
POL                                               POL TR0236589549  WENTER
COV                                                 RAKESH MISHRA FN 01    COV
CLT                                               ASF    22-37374-MFJBF-
MED                                                   MED DFKUGE97823B0


But my output is coming as

Code:
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
POL                                               POL TR0236589549  WENTER
MED                                                   MED DFKUGE97823B0


The record with COV in Field1 is missing in the output Crying or Very sad . Could you please help me in this.
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Frank Yaeger
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PostPosted: Tue Sep 04, 2007 10:13 am    Post subject: Reply with quote
Madhu Sudhan,

Did you miss the part where I said
Quote:
If the input is really as described with at most one 3-byte field2 value in each record, then you can use this DFSORT job to do what you want


Your original input only has one 3-byte value in 51-80 with blanks around it. The DFSORT job I gave you works for that case or for any case where the target value is the first value in 51-80. In your "new" input, COV is NOT the first value in 51-80 which is an entirely different case for which the job won't work. I can't think of anything that would work for that case.

If you had showed the more complete input in your first post, you would have saved us all a lot of time.
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Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
DFSORT is on the Web at:
www.ibm.com/storage/dfsort
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