filter factor的意思

filter factor中文翻譯：

[光]濾光因數

相似詞語短語

factor───vt.把…作為因素計入；代理經營；把…分解成；n.(Factor)人名；(英)法克特；vi.做代理商；n.因素；要素；[物]因數；代理人

filter───n.（Filter）（德）菲爾特（人名）；v.過濾；滲透；用過濾法除去；慢慢傳開；緩行；僅可左轉行駛；n.過濾器；濾波器；篩選程序；分流指示燈

dilution factor───[化學]稀釋因子；稀釋系數

fugacity factor───逸度因子

genetic factor───遺傳因子；遺傳因素

cabin filter───座艙過濾器

filter mask───[醫]過濾器面具，過濾式防毒面具

filter coffee───過濾式咖啡

critical factor───關鍵因素；臨界因素；臨界因子[因素]; 關鍵因素

雙語使用場景

The query annotation for this predicate shows that the predicate filter factor (FF) is 0.000014, or 0.0014%.───此謂詞的查詢注釋顯示謂詞過濾因子(FF)是0.000014，或0.0014%。

FF (see number 6 in Figure 5) : Filter factor for the predicate.───FF(見圖5中6)：謂詞的過濾因子。

The filter factor indicates how selective the predicate is.───過濾因子表示謂詞的選擇性有多強。

To understand how the optimizer ends up with 0. 0014% as the filter factor, first look at the six elements in the IN list predicate.───為了了解優化器如何最終以0.0014%作為過濾因子，首先要查看在IN清單謂詞上的6個元素。

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。

Filter factor A multiple that indicates the increase in exposure required when such a filter is used.───濾色片系數只是用該濾色片所需的額外曝光倍數。

The Filter factor for each predicate indicates the proportion of data the optimizer estimates will satisfy the predicate.───每個斷言的篩選因子表示優化器估計符合斷言的數據的比例。

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之間的一個數值，它用來評估表中謂詞為真的行所占的比例。

英語使用場景

Since it is a range predicate and there are no frequency and histogram statistics available, the filter factor is calculated with the basic statistics information HIGH2KEY and LOW2KEY.

For SQL statements with variables, the optimizer uses a default filter factor to determine the best access path at bind time.