filter factor
常見例句
- The filter factor indicates how selective the predicate is.
過濾因子表示謂詞的選擇性有多強。 - For SQL statements with variables, the optimizer uses a default filter factor to determine the best access path at bind time.
對于帶變量的 SQL 語句,優(yōu)化器會使用一個默認過濾因子在綁定時確定最佳訪問路徑。 - 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.
過濾因子是 0 到 1 之間的一個數(shù)值,它用來評估表中謂詞為真的行所占的比例。 返回 filter factor