Index design has a critical impact on access path selection.
索引设计对访问路径选择至关重要。
It will be a period for careful stock selection rather than index trading.
这将是一个时期进行认真的股票选择，而不是指数交易。
By default, row selection is based on row index.
预设情况下，资料列选取会根据资料列索引进行。
By default, row selection is based on row index.
预设情况下，资料列选取会根据资料列索引进行。
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