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HASH vs NESTED LOOP join: when is one better than the other ?

From: Spendius <spendius_at_muchomail.com>
Date: 22 Mar 2006 07:50:22 -0800
Message-ID: <1143042622.225684.170260@t31g2000cwb.googlegroups.com> 





Hello,



I'm *not* talking about the cost as computed by the optimizer here.
Please let's forget this figure.



When, internally, does Oracle consider that a certain join will give
better results than the other to join 2 tables ? Can the algorithm be
simply summarized ?



Thanks.


Spendius
Received on Wed Mar 22 2006 - 09:50:22 CST












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