Therefore, neither index can be used because DB2 might return incomplete results for this predicate.
由于DB 2可能为该谓词返回不完全的结果，因此两个索引均不能使用。
If DB2 used a single index range scan from 20 to 30, it would miss this document and return an incomplete query result.
如果DB 2在20到30之间使用单个索引范围扫描，则会错过该文档，并返回不完全的查询结果。
By default the 0 index would return the first section of the separated string which would be Toronto in this example.
缺省情况下，0索引将返回分隔后的字符串的第一部分，即本例中的Toronto。
If no index is found, then there are no cached tweets, so there is nothing to show and no optimization can be made on the query (and you return a value of 0 to indicate this).
如果没找到任何索引，那么就没有缓存的tweet，所以就没有展示的东西，并且没有可对查询进行的优化(您返回一个0值以指示这一点)。
Place the cursor under this table, press Enter, then type Click here to return to the Index Page.
将光标放在这张表的下面，按下enter，然后键入Click heretoreturn tothe Index Page。
When this index exceeds the rate of return earned on equity by the business, the investor's purchasing power (real capital) shrinks even though he consumes nothing at all.
当这个指数超过企业的资本回报率，投资者的购买力(真实资本)缩小为零，即使他没有消费任何东西。
This paper constructed a new index: risk-return tradeoff ratio (RRTR), for portfolio selection, based on a premise that the reason of investors bearing the risks is to gain the super returns.
本文根据投资者冒风险是为了获得超过无风险收益的超额收益这一基本假定，构造了风险收益抵换率这一指标作为投资者进行资产选择的基础。
This paper constructed a new index: risk-return tradeoff ratio (RRTR), for portfolio selection, based on a premise that the reason of investors bearing the risks is to gain the super returns.
本文根据投资者冒风险是为了获得超过无风险收益的超额收益这一基本假定，构造了风险收益抵换率这一指标作为投资者进行资产选择的基础。
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