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  3. November 2009

Re: Difference between RPG III and RPG IV with CHAIN

Loyd Goodbar wrote:

IMO, chain is the wrong tool for looking at files with duplicate keys. I've
only used chain when key values are unique, or SETxx and READxx for
duplicate-keyed files. Know your data...

Why? Especially for duplicate keys, CHAIN plus READE can work great. The CHAIN not only does the SETLL but also a 'priming' READ for a loop. Just wondering why it should be avoided.

Tom Liotta

p.s. Yes... late response. I'm almost at the point of "one list per week".


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