The columns and rows have zero-based indexes.

列和行的索引从零开始。

youdao

Based on that information, you can delete indexes that are not required.

您可以根据通过这些方法获得的信息删除不需要的索引。

youdao

However, in the absence of data distribution information, the optimizer will calculate selectivity for filters of different types based on table indexes.

然而在缺乏数据分布信息的情况下，优化器将基于表索引计算不同类型筛选器的选择性。

youdao

Alternative indexes have higher risk than market-based indexes and therefore provide a different return path relative to the risk.

FORBES: No Free Lunch from Alternative Indexes

That has skewed the results, and has led to raised eyebrows when evaluating market conditions based on indexes alone.

FORBES: Binders Full Of Stock Opportunities

Early ETFs were almost all based on indexes.

FORBES: ETFs Are Friendly On Fees But Not Always Your Best Bet