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In Duplicates elimination which record is moved to output...

 
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satish kanamarlapudi

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Joined: 23 Jul 2008
Posts: 29
Location: Little Rock - Arkansas

PostPosted: Thu Jul 02, 2009 11:34 am    Post subject: In Duplicates elimination which record is moved to output...
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Hi,

As per the below sort card i am eliminating duplicates and kindly let me know which record is picked while eliminating duplicates in a file.

Is it that only first record will be picked and moved to output file if there are many records with duplicates???.

Because in my case even though i am eliminating duplicates of 5,6CH,A bytes the rest of the records data vary and i have to pick only first row n in my case its picking 2nd row.

SORT FIELDS=(5,6,CH,A)
SUM FIELDS=NONE

Thx,
Satish
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bipinpeter

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Joined: 18 Jun 2007
Posts: 213
Location: Cochin/Kerala/India

PostPosted: Thu Jul 02, 2009 12:15 pm    Post subject:
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Hi satish,
As per my understan if you use EQUALS parameter along with SORT FIELDS the first record will go to your output file and second record tretaed as the duplicate.simply it will maintain the order.
I think default EQUALS parameter is enabled.If EQUALS is not in effect we cant say which record will go to output file.

Correct me if i am wrong
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Frank Yaeger

DFSORT Moderator


Joined: 15 Feb 2005
Posts: 7130
Location: San Jose, CA

PostPosted: Thu Jul 02, 2009 8:51 pm    Post subject:
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Yes, with EQUALS, the first record is kept. Without EQUALS, any record can be kept.

EQUALS is NOT the shipped default for DFSORT, although the site can change the installation default to EQUALS.

To use EQUALS, you can just specify:

Code:

//DFSPARM DD *
  OPTION EQUALS
/*
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