Prior to your index creation effort, you may run PERFORMER to get a performance baseline for later comparison.

在进行创建索引的工作之前，您可以运行PERFORMER来获得性能基线，以便稍后进行比较。

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If the index is being bypassed, then the RHS of the comparison should be type-cast.

如果会绕过索引，应该对比较表达式的RHS执行类型转换。

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For comparison, Figure 3 illustrates the access plan where I forced the DB2 optimizer to ignore the index by adding the clause SELECTIVITY 1 to the predicate in the where clause.

为了便于比较，图3显示了通过将SELECTIVITY 1子句添加到where子句的谓词中，强迫db2优化器忽略索引的访问计划。

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The FTSE Nareit Americas REIT Index, by comparison, has a current yield of 2.9%.

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But by comparison, the Russell 2000 Index, which is a broad measure of riskier small-cap stocks, is up 12%.

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In comparison, the MSCI World index has doubled from its lows, in U.S. dollar terms, and today is about 15% below the 2007 peak.

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