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  3. January 2009

Re: FW: Niftiest thing(s) you have done in RPG ILE or /FREE

On Thu, Jan 8, 2009 at 12:32 PM, Mark Walter <mwalter@xxxxxxxxxxxxxxx> wrote:
I'm not starting that holy war again, but here is an example.

Take a couple of tables that are of a Parent/Child relationship. Large tables, say, a million records for the parent, and 3 million for the child. These tables have their primary keys defined. Now write a program that reads in a do loop, running another do loop for the read of the child file in order to print some sort of report. Run the program and see how long it takes.

Now, if you can, write a matching record program to print the same report.

The Cycle/MR will outperform the Full Procedural program by orders of magnatude.

Not if you write the full procedural as a merge sort.
The do-loop within do-loop is not the way to do it
(unless you *want* it to take orders of magnitude
longer).

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