Figure 2 shows some guidelines on when to choose alternate collection options.
图2显示了在什么时候选择备用收集选项的指导。
For the exceptional situations where the optimizer cannot choose an optimal query execution plan, DB2 has added features such as the SELECTIVITY clause and optimization guidelines.
对于优化器不能选择最佳查询执行计划的例外情况，DB 2已经增加了诸如selectivity子句和优化指南之类的特性。
In addition, the guidelines recommend that people choose more potassium-rich foods, advising 4, 700 milligrams of potassium per day.
此外，《指南》还推荐人们选择含钾量较多的食物，建议每日钾摄入量是4700毫克。
If you do not choose to purchase it, note that you will still be responsible for following the research protocols and style guidelines we use.
如果你不买这本书，你仍要遵守我们使用的研究协议和文体准则。
The guidelines presented in this section help library designers choose between various designs and implement types correctly.
本节提供的准则可帮助库设计人员从各种设计中做出选择，并正确实现类型。
The guidelines presented in this section help library designers choose between various designs and implement types correctly.
本节提供的准则可帮助库设计人员从各种设计中做出选择，并正确实现类型。
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