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Questions/Doubts on New PTF

 
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Sqlcode
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Joined: 15 Dec 2006
Posts: 157
Topics: 38

PostPosted: Fri Feb 19, 2010 12:31 pm    Post subject: Questions/Doubts on New PTF Reply with quote

I started playing with new DFSort PTF yesterday and I have few questions on that.

1) For subtaskn, is it really a Parallel processing? Meaning does DFSort actually initiates 2 parallel task to save some time on processing or these are being processed one by one? If it does initiate 2 parallel task, Is there a way to check that?

2) Although I have tried this and got error but in REFORMAT statement,why are we not allowed to insert filler char?

In the Example below, I am trying to insert '-' between the fields but it gave me error. I do understand that we can add fields in BUILD statement after REFORMAT but I was curious to know what was the purpose behind not allowing?


Code:
REFORMAT FIELDS=(F1:020,08,C'-',014,06,C'-',
                                       F2:010,08,C'-',018,07)     


I haven't had time to test this with large volume of data but I may sometime test it during weekend.

Once again, Thanks a lot for coming up with an alternative to SPLICE (not sure if its true!!) and making it more closer to DB2 concepts of JOIN.

Thanks,
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Frank Yaeger
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PostPosted: Fri Feb 19, 2010 12:49 pm    Post subject: Reply with quote

I can't discuss in detail what we're doing. But yes, the tasks run in parallel.

To keep the REFORMAT statement simple, we just allow the fields from the two input files (and the ? indicator). If you want to add constants or anything else, you can either do that before the join (with JNFxCNTL statements) or after the join (with SYSIN statements).
_________________
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
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Sqlcode
Intermediate


Joined: 15 Dec 2006
Posts: 157
Topics: 38

PostPosted: Fri Feb 19, 2010 1:04 pm    Post subject: Reply with quote

Frank,
Thanks for the immediate response.

Thanks,
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