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From Apache Wiki <wikidi...@apache.org>
Subject [Db-derby Wiki] Trivial Update of "JoinOrderPermutations" by BryanPendleton
Date Sun, 05 Oct 2008 15:59:57 GMT
Dear Wiki user,

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The following page has been changed by BryanPendleton:

The comment on the change is:
point to new page

    - getNextDecoratedPermutation()
    - costPermutation()
+ You can see the results of this process by reading the QueryPlanJoinOrder from the query
plan. Here, we describe
+ how the code computes this join order.
  This page describes the general flow of code as it occurs when a class such as !SelectNode
or !TableOperatorNode calls the getNextPermutation() method of an !OptimizerImpl.  The expectation
is that such a call will occur as part of a block of code similar to the following (copied
from !SelectNode.optimize()):

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