最佳实践：如果想要减少执行时间，那么不要在可能过滤掉大量所评估记录的规则中定义连接。
Best practice: If you want to reduce the execution time, then do not define joins in a rule that filters out the number of records being evaluated by the rule.
如果给定最佳的执行时间，则减少访问时间是开发人员需要关心的另一个问题。
Given the optimal execution time, reducing access time is another concern for developers.
如果给定最佳的执行时间，则减少访问时间是开发人员需要关心的另一个问题。
Given the optimal execution time reducing access time is another concern for developers.
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