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Need advice on sort card


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SENTHIL MURUGAAN
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PostPosted: Thu Apr 04, 2013 1:00 pm
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Hi,

I need a sort card to eliminate duplicates in different scenario.
Assuming input file holds below values

Input:
AAA
AAA
BBB
CCC
CCC

Output:
BBB
The output file must hold only the unique value BBB alone.
Is there any option to achive this in Sort card?
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Bill Woodger

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PostPosted: Thu Apr 04, 2013 1:12 pm
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Do you need to sort the data, or is it already sorted?

Are you able to use SyncTool (often "aliased" as ICETOOL). If so, you can look at the SELECT operator.
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SENTHIL MURUGAAN
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PostPosted: Thu Apr 04, 2013 1:36 pm
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Hi Bill,

Data will be sorted in previous step, Actually the data will be present in two input files. so data will be concatinated and sorted to bring it to single file.

It would be fine if option present in ICETOOL and will it be possible to sort in the same step of the above query. Thanks
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Bill Woodger

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PostPosted: Thu Apr 04, 2013 1:50 pm
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Well, SELECT with NODUPS should do you, with USING(xxxx) and an xxxxCNTL with OPTION COPY.

If there is an earlier step simply to sort the file for this process, that can be included in the same step, with the removal of the USING (by default, the data will be sorted on the ON values).
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SENTHIL MURUGAAN
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PostPosted: Thu Apr 04, 2013 2:32 pm
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Hi Bill,

Oh Great! Can I have a sample syntax to achive this. Thanks...
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Bill Woodger

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PostPosted: Thu Apr 04, 2013 2:33 pm
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Also, if your SyncSort is current, look at this to see what to look at in your manual for another way to do it conveniently.
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SENTHIL MURUGAAN
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PostPosted: Thu Apr 04, 2013 3:26 pm
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Hi Bill,

I think the provided information would be sufficient for me.
Great! Thanks for help bill.
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Bill Woodger

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PostPosted: Thu Apr 04, 2013 3:51 pm
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No problem. Thanks for letting us know.

It is lucky, as I completely missed that you wanted more, as our messages "crossed in the post" as it were.
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sandip_mainframe
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PostPosted: Thu Apr 04, 2013 6:37 pm
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Hi Senthil,

You can use below code -

Code:
//STEP2    EXEC PGM=ICETOOL                         
//DFSMSG   DD  SYSOUT=*                             
//TOOLMSG  DD  SYSOUT=*                             
//IN01     DD  *                                     
AAA                                                 
BBB                                                 
AAA                                                 
CCC                                                 
CCC                                                 
//OUT01    DD  SYSOUT=*                             
//TOOLIN   DD  *                                     
   SELECT FROM(IN01) TO(OUT01) ON(01,03,CH) NODUPS   
//*   
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Bill Woodger

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PostPosted: Thu Apr 04, 2013 6:53 pm
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Sandip,

The data is already sorted. As you have coded that, it will be sorted again, which is a waste of resources. You need USING(xxxxCNTL) and have OPTION COPY in the xxxxCNTL DD.
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sandip_mainframe
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PostPosted: Thu Apr 04, 2013 7:52 pm
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Oops my Bad. Thanks Bill for pointing out my mistake.
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SENTHIL MURUGAAN
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PostPosted: Thu Apr 04, 2013 10:39 pm
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Hi Bill,

As per your suggestion, I tried and got my data sorted as expected. I have specified the syntax below since it might be useful for people referring.

//TOOLIN DD *
SELECT FROM(INPUT) TO(DUP) DISCARD(NODUP) -
ON(1,7,CH) ALLDUPS USING(CTL1)
/*
//CTL1CNTL DD *
SORT FIELDS=(1,7,CH,A)

Thanks again for lightning speed response. icon_biggrin.gif
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Bill Woodger

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PostPosted: Thu Apr 04, 2013 11:10 pm
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To confirm that you've now "merged" two tasks, which is the original sorting of the file and the de-duplication.

If you don't need the discarded data for anything, you can remove the DISCARD and its DD.

If you are doing the SORT in this step as well, you don't need to specify it in the CTL1CNTL, as it will be automatic for SELECT.
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dick scherrer

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PostPosted: Fri Apr 05, 2013 1:35 am
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Hello and welcome to the forum,

Will either of the 2 input files contain duplicates or are duplicates introduced when the 2 sets of data are combined?

If the 2 inpt files are only unique entries, you might consider JOINKEYS.
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SENTHIL MURUGAAN
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PostPosted: Fri Apr 05, 2013 11:13 am
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Hi Bill,

Previously I had a sort step to merge the 2 files in sorted order to bring it to one file and eliminate the duplicate records. Now I have removed the previous sort step and achieved it in one step. Thanks

Also thanks for updating me that SELECT will do SORTING by default.

Hi Dick scherrer, Thanks for the invite. Eiter of the 2 files cannot have duplicates. only on merging they can have. So i have included sort in control cards. Thanks
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SENTHIL MURUGAAN
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PostPosted: Fri Apr 05, 2013 11:15 am
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Hi Bill,

To add, I need both DUP & NODUP records. So I kept DISCARD as it is.
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dick scherrer

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PostPosted: Fri Apr 05, 2013 8:37 pm
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Hello,

Then i'd suggest you look at JOINKEYS - not only for this process, but others in the future. I believe there is more flexibility with a JOINKEYS icon_wink.gif
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