Answer / uday bagdi

we can create the pre-run time array so that data-base file come in our rpg program then we read that pre-run time array with loop and increment the array indexing by 2

Answer / uday bagdai

1st set the pointer on the record(depend on rrn).after increase the rrn value by 2 (rrn=rrn+2).trape their on doweq loop so you can read alternative records.because (your pointer set on alternative records)

Answer / abhishek

The first method is not very full proof. Actually it is not
necessary that RRN is always sequential.

Suppose initally there are 100 records in a file and so
does the RRN starts from 1 for first record and 100 for
last record.

If 1 record is deleted from the file RRN remains unchaned
and in that case adding 2 may cause a problem if system
does not get Record at that RRN it will read the next
sequential.

Answer / ramrdy

hi uday,

can you write code for that program

Answer / sreedhar reddy

Simple way is just read a PF process 1st record, then for second read ignore it. It is simple like having two read operations, first is at start of the loop and second is at just before end of the loop.

Answer / mahalakshmi

All the records in a file is first loaded in to an datastructure and then incrementing the value of datastructure +2 then read the values in the datastructure.

Answer / ramu

how to fetch alternate records from data base(pf) using RPG? (ex. 1st and 3rd and 5th .......etc)
I need Rpg code not theory?

Answer / krishna

sample code for alternative record in a pf
fsamplepfif e disk
/free
dow not %eof(samplepf);
read samplepf;
If %eof(samplepf);
Leave;
endif;
---------;(doing some actions based on the conditions)
read samplepf;
enddo;
*inlr = *on;
/end-free

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