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What does this INREC do?


IBM Mainframe Forums -> DFSORT/ICETOOL
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Lino Pontes

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Joined: 04 Apr 2016
Posts: 2
Location: US

PostPosted: Fri Apr 08, 2016 12:17 am
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Please help me understand the following statement:

Code:
INREC FIELDS=(01,18,                     
             21,01,CHANGE=(02,C'7',C'19',
                              C'8',C'19',
                              C'9',C'19'),
                          NOMATCH=(C'20'),
             21,80)


Trimmed and code'd
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Rohit Umarjikar

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Joined: 21 Sep 2010
Posts: 2578
Location: NYC,USA

PostPosted: Fri Apr 08, 2016 1:32 am
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funny, anyways look here and should be posted under dfsort
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Nic Clouston

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Joined: 10 May 2007
Posts: 2455
Location: Hampshire, UK

PostPosted: Fri Apr 08, 2016 2:54 am
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Quote:
Hi! This is your First post in our Forums! So please be sure to 1) Use meaningful and descriptive Topic Title 2) Try to post your query in the relevant forum category 3) Make sure your query is not already posted and solved in our forums, Use the Search facility and avoid Reposts! If you are following the above rules, delete this message and post your query here!

I presume you did not delete the message because you did not follow points 2 and 3. Ylu also got point 1 wrong - iINREC is not a JCL statement/keyword/parameter/whatever. It is a DFSORT keyword.

Moved to correct part of the forum.
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Terry Heinze

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Joined: 14 Jul 2008
Posts: 1249
Location: Richfield, MN, USA

PostPosted: Fri Apr 08, 2016 7:05 pm
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Also, please use Code tags to preserve original spacing:
Code:
INREC FIELDS=(01,18,
 21,01,CHANGE=(02,C'7',C'19',
 C'8',C'19',
 C'9',C'19'),
 NOMATCH=(C'20'),
 21,80)
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Bill Woodger

Moderator Emeritus


Joined: 09 Mar 2011
Posts: 7311
Location: Inside the Matrix

PostPosted: Fri Apr 08, 2016 7:15 pm
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It is adequately described in the manual, but here we go:

Code:
INREC FIELDS=(01,18,                     
             21,01,CHANGE=(02,C'7',C'19',
                              C'8',C'19',
                              C'9',C'19'),
                          NOMATCH=(C'20'),
             21,80)


Firstly, better as BUILD. BUILD is not overloaded, and always means the same thing wherever you see it. This is not so for FIELDS.

Code:
INREC BUILD=(01,18,                     
             21,01,CHANGE=(02,C'7',C'19',
                              C'8',C'19',
                              C'9',C'19'),
                          NOMATCH=(C'20'),
             21,80)


It will make a new version of the current record, sourced from the current record. It will copy the first 18 bytes, then use the 21st byte to make a two-digit value (the first item in the bracket is the length), '7', '8' and '9' will become '19', and all other values will become '20' (the NOMATCH). Then bytes 21 for a length of 80 are copied, completing the new version of the record. Bytes 19 and 20 from the source are ignored, and byte 21, the source for the source of the CHANGE, is repeated as-is.
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Lino Pontes

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Joined: 04 Apr 2016
Posts: 2
Location: US

PostPosted: Fri Apr 08, 2016 8:49 pm
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Thank you for the prompt reply. Much appreciated.
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