filter factor

常見例句

雙語例句

• 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.
  對於帶變量的 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逕。
• 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爲真的行所佔的比例。
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