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MAINFRAME - TIP OF THE DAY : All available storage is assigned to the job or jobstep, If REGION is coded 0K or 0M

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TuhinMF
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PostPosted: Fri Apr 24, 2015 7:56 pm    Post subject: Extended SOrt Reply with quote

There is a data, consisting of 3 lines, one header followed by 2 detail records.
Now these three data lines are duplicated.
I want to remove them using JCL, what can i use.
Please suggest.

H20152304****record1****12345****
I********* *******
I###########
H20152304****record1****12346****
I********* *******
I###########
H20152304****record2****12347****
I********* *******
I###########
H20152304****record2****12348****
I********* *******
I###########


NB: The number 12345 is the counter number. It is just a one-up number. One caanot decide on thta number for duplicacy.
THe header data before the one-up number needs to be validated here.

MOst importantly, The output should be as :

H20152304****record1****12345****
I********* *******
I###########
H20152304****record2****12347****
I********* *******
I###########
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William Collins
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PostPosted: Fri Apr 24, 2015 9:11 pm    Post subject: Reply with quote

Will the duplicate groups of records be consecutive, or may they be separated by other keys?
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TuhinMF
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PostPosted: Sun Apr 26, 2015 12:09 pm    Post subject: Reply with quote

William Collins wrote:
Will the duplicate groups of records be consecutive, or may they be separated by other keys?
the duplicacy needs to be removed based on the header record only. The first 15 characters of tge header needs to be validated for duplicate check.
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William Collins
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PostPosted: Sun Apr 26, 2015 1:20 pm    Post subject: Reply with quote

Can you read my question and try to answer it? The data you have shown is in sequence. Is that representative of the actual data?
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PostPosted: Sun Apr 26, 2015 5:14 pm    Post subject: Reply with quote

As you can see, they are consecutive. Header plus two details.
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PostPosted: Mon Apr 27, 2015 7:25 pm    Post subject: Reply with quote

Hi Sirs,
Any help on this will be highly appreciated.
Please do let me know if any information is required on this.

Thanks n Regard,
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PostPosted: Tue Apr 28, 2015 10:52 am    Post subject: Reply with quote

Use JOINKEYS with the same dataset for both inputs.

Use JNF1CNTL to extend the records to include a key and an ID for WHEN=GROUP with PUSH (so all records in the group get the same key and same ID, a sequence number for groups).

Use JNF2CNTL to specify just the GROUP output (key and ID) and with OPTION EQUALS and SUM FIELDS=NONE ensure the first record only is output. Use BUILD= with IFTHEN=(WHEN=INIT to ensure the cut-down record is pre-processed for the SORT.

Om the F1 JOINKEYS specify SORTED,NOSEQCK

No need of a JOIN, as you get only matches by default.

On the REFORMAT statement just specify your original F1 record without the extension.

Other than where you extend for fixed-/variable-length records, that's about ti.
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