aggregate query 中文意思是什麼

aggregate query 解釋
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  • aggregate : vt 1 集合，（使）聚集。2 總計，共計，合計。adj 1 聚合的；（花）聚生的。2 【地質學；地理學】聚成巖...
  • query : n 1 質問；詢問；疑問，懷疑。2 敢問，請問〈在疑問句前單獨使用〉。3 【印刷】（打在原稿或校樣上的）...
  1. The sql server 2005 query optimizer can match more queries to indexed views than in previous versions, including queries that contain scalar expressions, scalar aggregate and user - defined functions, interval expressions, and equivalency conditions

    與以前各版本相比， sql server 2005查詢優化器可將更多查詢與索引視圖相匹配，包括包含標量表達式、標量聚合函數與用戶定義函數、間隔表達式以及等價條件的查詢。
  2. On this bases, two improved algorithms are given in cases such as input data items with different weight, continuous query networks terminated with non - aggregate operator. they extend the applicability of the algorithm

    在此基礎上進一步研究了該演算法在輸入數據單元具有不同權重、以非聚合類查詢操作為結尾這兩種情況下的改進推廣，擴展了演算法的適用范圍。
  3. To solve the problem of load shedding about continuous query network in which has multiple input and output data streams and terminated with an aggregate operator, we studied the load - shedding technology and propose the algorithm

    針對以聚合類查詢操作為結尾，包含多條輸入數據流，多查詢結果的連續查詢網路的降載問題，對load - shedding技術進行研究，提出了基於分支路徑分析的load - shedding演算法。
  4. Query that contains an aggregate function and a

    以下示例使用了一個包含聚合函數和
  5. Returns aggregate performance statistics for cached query plans

    返回緩存查詢計劃的聚合性能統計信息。
  6. Second, the issue of approximate aggregation query on the data streams is discussed. meanwhile, the approximate query theories based on the histogram synopsis is proposed, and the autosuited histogram synopsis method and the histogram synopsis synchronization method are provided. third, the problem of predictive aggregate queries on the continuous data streams is researched, and a new predictive aggregate query method based on basic window synopsis and predictive equation is given

    本文圍繞連續數據流上的聚集查詢展開討論，首先針對數據流上的精確聚集查詢問題，提出3種改進的基於滑動窗口的精確聚集查詢演算法，這三種演算法可以在消耗很少內存的情況下提供高效準確的查詢結果;其次討論了連續數據流上的近似聚集查詢問題，給出了基於數據流滑動窗口的直方圖大綱理論，並提出了適用於滑動窗口的自適應直方圖大綱生成演算法和大綱同步策略;最後討論了連續數據流上的預測聚集查詢問題，提出了一種基於基本窗口及預測方程方法的預測聚集查詢演算法。
  7. In sigmod, philadelphia, pennsylvania, usa, 1999, pp. 359 - 370. 21 shanmugasundaram j, fayyad u, bradley p. compressed data cubes for olap aggregate query approximation on continuous dimensions

    此外， pmc還能保證數據立方體中所有數據在查詢性能上的均衡性，這是傳統的視圖級別的部分物化所無法做到的。
  8. According to the theory mentioned above, a new data stream management system jasper which extends the sql and forms a new continuous query language jaspercq is developed. jaspercq not only supports the continuous query, but also supplies the approximate query and predictive aggregate query

    根據上述理論，開發了一個名為jasper的數據流管理原型系統，對sql語言進行了擴充形成了可以支持連續查詢、近似查詢以及預測聚集查詢語義的流式查詢語言jaspercq 。
  9. Groups the elements of a query result. can also be used to apply aggregate functions to each group. the grouping operation is based on one or more keys

    [本主題是預發布的文檔，在將來發布的版本中可能會有更改。空白主題是為將來預留的。
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