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  2. RPG400-L
  3. October 2007

RE: RPG II question

Record address files were typically produced by #GSORT on S/34 or S/36
(FMTDTA equivalent) by defining the sort specification as HSORTA rather
than HSORTR (or HSORTRS).

Only control fields were included in the sort specifications; no data
(FDC) fields.

#GSORT (or FMTDTA) creates a file containing the binary RRNOs of the
records included in the sort and the ordering applied by the sort. The
record address file is used to process the primary file by RRNO to
present the data in the selected/sorted order.

As previously mentioned, record address files could be used as a limits
file also.
I didn't do much of this, but I think you created one record in the file
that contained the low and high values of the keys you wanted to process
and the primary file would be read and only present records within those
key limits.



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