filter factor

常见例句

双语例句

• The filter factor indicates how selective the predicate is.
  过滤因子表示谓词的选择性有多强。
• For SQL statements with variables, the optimizer uses a default filter factor to determine the best access path at bind time.
  对于带变量的 SQL 语句，优化器会使用一个默认过滤因子在绑定时确定最佳访问路径。
• The filter factor is a number between 0 and 1 that estimates the proportion of rows in a table for which the predicate is true.
  过滤因子是 0 到 1 之间的一个数值，它用来评估表中谓词为真的行所占的比例。
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