Comments on: AS/400: Unique records in file http://itknowledgeexchange.techtarget.com/itanswers/uniqe-records-in-file/ Mon, 09 Nov 2009 03:30:05 +0000 http://wordpress.org/?v=2.6.2 By: Ambrish 82 http://itknowledgeexchange.techtarget.com/itanswers/uniqe-records-in-file/#comment-58287 Ambrish 82 Wed, 03 Dec 2008 04:16:02 +0000 #comment-58287 thanks , it's really useful. thanks , it’s really useful.

]]> By: Philpl1jb http://itknowledgeexchange.techtarget.com/itanswers/uniqe-records-in-file/#comment-58261 Philpl1jb Tue, 02 Dec 2008 16:45:10 +0000 #comment-58261 Select distinct works great provide that all the fields retrivied are the same for a specific value of FLD1. It retrieves distinctly different rows. Select distinct works great provide that all the fields retrivied are the same for a specific value of FLD1. It retrieves distinctly different rows.

]]> By: Gilly400 http://itknowledgeexchange.techtarget.com/itanswers/uniqe-records-in-file/#comment-58256 Gilly400 Tue, 02 Dec 2008 15:01:11 +0000 #comment-58256 Hi, Or if you're using SQL you could use a SELECT DISTINCT. Regards, Martin Gilbert. Hi,

Or if you’re using SQL you could use a SELECT DISTINCT.

Regards,

Martin Gilbert.

]]> By: Philpl1jb http://itknowledgeexchange.techtarget.com/itanswers/uniqe-records-in-file/#comment-58253 Philpl1jb Tue, 02 Dec 2008 14:13:21 +0000 #comment-58253 A logical with UNIQUE keyword will prevent adding records that violate the rule. It will error when compiled if the file contains duplicte key values. The method to see one occurance of each varies with the access method. In QUERY/400 you could use report summary functions on fld1 and other fields that you want to report. In RPG you could use the Key - something like this *loval SETTLL myfile Read myfile dow not %eof(myfile) process your record FLd1 SETGT myfile Read myfile enddo The SETGT will position you at the first record past the key value. Phil A logical with UNIQUE keyword will prevent adding records that violate the rule. It will error when compiled if the file contains duplicte key values.

The method to see one occurance of each varies with the access method.
In QUERY/400 you could use report summary functions on fld1 and other fields that you want to report.

In RPG you could use the Key - something like this

*loval SETTLL myfile
Read myfile
dow not %eof(myfile)
process your record
FLd1 SETGT myfile
Read myfile
enddo

The SETGT will position you at the first record past the key value.

Phil

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