What is included in the calculation functionality of the database?

Hi there,
I have read that - as SAP BW has to support several database products - the set of calculation functionality has been reduced to the lowest common denominator. Is that correct?
What are the calculation commands that are processed by the database and what operations are left for the OLAP engine in terms of GROUP BY, SUM, MIN, MAX, COUNT, DISTINCT COUNT....
Are there papers where this functionality is written down?
Thanks & Regards,
Pascal

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Kind regards,
Pablo Estevez
Solved!
Go to Solution.
Attachments:
TestPID.vi ‏31 KB

Dear Nathand,
Thanks for your answer, I tried the change and you are right. That shows that this not a standard PID, since that means (and actually I can see it now by checking inside the vi) that it is not using the derivative of the error but the derivative of the process variable. I know that this is used sometimes to prevent the effect of fast changing set-points, but it is a shame that they do not comment on it in the help, and that this is not a selectable feature. Do you know if there is a way to edit these pre-packaged vi's?
One more question, about the labview style. I included the sequences just to group terms and make the code more readable to separate the integrator from the derivator and not have a knot of entangled signals. Specially when I run the clean-up diagram, it gets very entangled. I have been looking for another way to do that (container boxes, groups). It would be nice if you could suggest me something I can do for it.
Thanks again,
Pablo

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Dear Nathand,
Thanks for your answer, I tried the change and you are right. That shows that this not a standard PID, since that means (and actually I can see it now by checking inside the vi) that it is not using the derivative of the error but the derivative of the process variable. I know that this is used sometimes to prevent the effect of fast changing set-points, but it is a shame that they do not comment on it in the help, and that this is not a selectable feature. Do you know if there is a way to edit these pre-packaged vi's?
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Thanks again,
Pablo

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What is included in the calculation functionality of the database?

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