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On 22/08/2008, at 8:36 AM, Pete Helgren wrote:
I thought DDS had broader implications than just in RPG programs.
It does. It affects COBOL and C programs too as long as they, like
RPG, specify keyed processing.
Query products can choose to use the keyed access path just like
HLLs. Whether a Query product uses arrival sequence or keyed sequence
depends on how it estimates the result. You can provide hints or help
to get a Query product to favour keyed over arrival for reading but
you can't force it.
You can force the order of the query result but that is different
from an HLL where you force the order of the input (and get an
ordered result as a by-product)
Regards,
Simon Coulter.
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