索引的顺序由优化器选择。
它高效，因为索引适合于最佳访问路径的选择。
It is efficient, as the indexes qualify for the choice of excellent access paths.
所以我不会选择，索引值为2的物品。
对于消费者来说，新的搜索引擎将为他们提供更多的选择。
For consumers, the new search engine will give them options.
选择一个索引以在右侧的网格中显示其属性。
Select an index to show its properties in the grid to the right.
如果使用索引的开销比表扫描的开销低，优化器将选择索引访问。
It will choose indexed access if it has lower cost than table scan.
在方格的下方，选择组成资料表主索引键的资料行。
In the grid beneath, choose the columns contributing to the table's primary key.
到现在，谷歌似乎是多数企业的选择搜索引擎首选。
As of now, Google seems to be the search engine of choice for most businesses.
到现在，谷歌似乎是多数企业的选择搜索引擎首选。
As of now, Google seems to be the search engine of choice for most businesses.
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