Document these assumptions and constraints so that when you go to update your plan throughout the project you can remember some of the "unusual" decisions you made previously.
将这些假设和约束编入文档,这样,当您实施项目的任何时候更新计划时,都可以记起您先前做出的一些“不寻常”决定。
Then you would try different methods to reduce the major uncertainties before you could update and communicate your plan with your increased understanding of the problem.
之后,在你能够更新并且随着对问题的深化交流计划之前,你会尝试用不同的方法来减小主要的不确定性。
To ensure that the optimizer selects a query plan that best reflects the current state of your tables, run UPDATE STATISTICS at regular intervals.
为确保优化器选择的查询计划能够最好地反映表的当前状态,应定期运行 UPDATE STATISTICS。
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