Joined: 01 Feb 2007 Posts: 1075 Topics: 7 Location: At Home
Posted: Wed Oct 03, 2007 12:32 pm Post subject: ALTSEQ
A colleague came up with this problem: a file is having a new record type added. Record types 1 to 9 are already used so the powers-that-be have decreed that the new record type is to be A. All very well so far. However, type 1 is the file header and type 9 is the trailer so the record has to be sorted between these 2 values. I fact it has to be sorted between 6 and 7 (6 < A < 7). ALTSEQ we thought! So I played....
trying this...
Code:
//SORTIN DD *
1 header
7 Record 4
6 Record 6
A Record 3
4 Record 7
A Record 2
A Record 1
6 Record 4
7 Record 1
9 trailer 6
//SORTOUT DD SYSOUT=*
//SYSIN DD *
SORT FIELDS=(1,1,AQ,A)
ALTSEQ CODE=(C1F7)
/*
gives this...
Code:
1 header
4 Record 7
6 Record 6
6 Record 4
A Record 3
A Record 2
A Record 1
7 Record 4
7 Record 1
9 trailer 6
OK so far - field 1 is in the correct sequence.
Now sort field 3 within field 1...
Code:
//SORTIN DD *
1 header
7 Record 4
6 Record 6
A Record 3
4 Record 7
A Record 2
A Record 1
6 Record 4
7 Record 1
9 trailer 6
//SORTOUT DD SYSOUT=*
//SYSIN DD *
SORT FIELDS=(1,1,AQ,A,10,1,ZD,A)
ALTSEQ CODE=(C1F7)
/*
we get...
Code:
1 header
4 Record 7
6 Record 4
6 Record 6
A Record 1
7 Record 1
A Record 2
A Record 3
7 Record 4
9 trailer 6
A & 7 are treated as equals but I want 7 > A > 6
What is wanted is this...
Code:
1 header
4 Record 7
6 Record 6
6 Record 4
A Record 1
A Record 2
A Record 3
7 Record 1
7 Record 4
9 trailer 6
Now, ideally, we only want the ALTSEQ to apply to the first field so that:
Code:
A Record 2 Another
sorts before
Code:
A Record 2 6aces
Is it possible? I looked at the Pgmers Guide, Tricks, Beyond the Basics, User guide and did a search on ALTSEQ in this forum and nothing SEEMED to say 'Yes'. _________________ Utility and Program control cards are NOT, repeat NOT, JCL.
Joined: 02 Dec 2002 Posts: 1618 Topics: 31 Location: San Jose
Posted: Wed Oct 03, 2007 12:50 pm Post subject:
Quote:
Is it possible?
Sure. You just have to think outside the box a bit. I believe this DFSORT job will give you what you want:
Code:
//S1 EXEC PGM=ICEMAN
//SYSOUT DD SYSOUT=*
//SORTIN DD *
1 header
7 Record 4
6 Record 6
A Record 3
4 Record 7
A Record 2
A Record 2 6aces
A Record 1
A Record 2 Another
6 Record 4
7 Record 1
9 trailer 6
/*
//SORTOUT DD SYSOUT=*
//SYSIN DD *
OPTION NOCHALT
SORT FIELDS=(1,1,AQ,A,10,1,ZD,A,12,10,CH,A)
ALTSEQ CODE=(C1F7,F7F8,F8F9,F9FA)
/*
SORTOUT would have:
Code:
1 header
4 Record 7
6 Record 4
6 Record 6
A Record 1
A Record 2
A Record 2 Another
A Record 2 6aces
A Record 3
7 Record 1
7 Record 4
9 trailer 6
Is that what you want?
Note: NOCHALT is DFSORT's shipped default, but you can specify it just in case it was changed by your System Programmer. It will ensure that ALTSEQ is used for AQ, but not for CH. _________________ Frank Yaeger - DFSORT Development Team (IBM)
Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
DFSORT is on the Web at:
www.ibm.com/storage/dfsort
Joined: 01 Feb 2007 Posts: 1075 Topics: 7 Location: At Home
Posted: Wed Oct 03, 2007 12:54 pm Post subject:
Thanks, Frank. I admit I am not very good at thinking outside boxes, although I did wonder if I would have to expand the alternate table. Just didn't wonder hard enough! _________________ Utility and Program control cards are NOT, repeat NOT, JCL.
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