在这一步中，需要使用上面讨论的工具来获取该查询的统计数据：其响应时间、详细的执行计划和成本，以便稍后进行深入分析。
At this step, you need to use the tools discussed above to get statistics on the query: its response time, its detailed execution plan, and costs for later in-depth analysis.
记录测试细节，例如您所做的修改、响应时间和执行计划。
Record details of your test, such as changes you made, response time, and execution plan.
2007年前这种方式是不成功的，很可能是因为执行计划的人低估了需要花费的时间并且去了解的很少。
Before 2007, it was unsuccessful, likely because the forces administering it tended to spend less time in their communities and so knew less about them.
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