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Results of TPC-R based test attracted a lot of attention and raise many questions. The most important question is why queries 3 and 20 were so slow?

Dmitri Kouzmenko, our optimization expert, explains this optimizer fault and shows the workaround to fix this problem. Also he sheds light to some interesting facts. See his comments here:

http://ibdeveloper.com/tests/tpc-r/some-comments-on-query-n-3/

First test results for Firebird 1.5.2 and InterBase 7.5.1 are published.