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Is the file defined as FIFO? Does it reuse deleted records?

If it's not FIFO, or it's reusing deleted records, then no, there's no guarantee.

James H. H. Lampert wrote:
Assuming a keyed PF, non-uniquely keyed, opened as externally-described, from RPG:
Is there any guarantee that, when reading all the records for a particular key (starting with a CHAIN for the initial read, and a READE in a loop for subsequent reads), they'll show up in order of ascending RRN within those matching the key?

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