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Patrick Huber 2014-11-26 12:17:24 +01:00 committed by Thomas Schmidts
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Documentation/Books/Users/Aql/Optimizer.mdpp
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!CHAPTER The AQL query optimizer !CHAPTER The AQL query optimizer
AQL queres are sent through an optimizer before execution. The task of the optimizer is AQL queries are sent through an optimizer before execution. The task of the optimizer is
to create an initial execution plan for the query, look for optimization opportunities and to create an initial execution plan for the query, look for optimization opportunities and
apply them. As a result, the optimizer might produce multiple execution plans for a apply them. As a result, the optimizer might produce multiple execution plans for a
single query. It will then calculate the costs for all plans and pick the plan with the single query. It will then calculate the costs for all plans and pick the plan with the