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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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PostPosted: Tue Nov 28, 2006 10:00 pm    Post subject: SORT Reply with quote

When using sort to remove the duplicate records, i.e. PGM=SORT with a SYSIN containing a SORT statement and SUM FIELDS=NONE, which record will be kept?

Suppose if i have 20 records with the same key which record do you think that will be written into output. Is it first or something????
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Frank Yaeger
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PostPosted: Tue Nov 28, 2006 10:32 pm    Post subject: Reply with quote

If EQUALS is in effect, then the first record of each set of duplicates will be kept. If NOEQUALS is in effect, then any record of each set of duplicates can be kept. You can specify EQUALS for DFSORT like this:

Code:

//DFSPARM DD *
   OPTION EQUALS

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Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
=> DFSORT/MVS is on the Web at http://www.ibm.com/storage/dfsort
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