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This is also true - generally speaking interactive will try for faster response, so it gets the first records. Batch tends to go for all.

The only situation that is truly interactive, IMO, is a display session. Running statements in remote connections will tend toward the batch approach.

Vern

On 1/17/2020 12:24 PM, Sam_L wrote:
Digging into my memory, seems to me that the optimizer may decide differently on batch vs interactive execution. but it's been a while...

Sam

On 1/17/2020 11:49 AM, Vernon Hamberg wrote:
I agree with using Visual Explain - it would show any difference in what the optimizer does.

Of course, when the environment changes, the optimizer might make different choices.



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