[Monetdb-developers] Single column select vs aggregation

Stefan de Konink stefan at konink.de
Thu Feb 18 17:46:31 CET 2010


Attached is a trace of a single column select operation, with a max, avg 
and equality.

The equality takes about 4 times more time than the avg operation.

 From the plan I see that the operation is executed paralel, but I do 
wonder why suddenly the uselect takes such a high amount of time.


Stefan
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