merge vt. 吞沒,吸收;使消失(在…中) (in; into); 【法律】合并(公司等)使并入,使結合,融合 (into; with)。 All fear was merged in curiosity. 在好奇心驅使下忘了一切恐怖。 vi. 被吞沒,被吸收,收入,消沒在;合并,并入。 The twilight merged into darkness. 薄暮已消失在黑暗之中。 merge with the masses 同群眾打成一片。
If the query includes a join , the optimizer must determine the join plan hash , sort merge , or nested loop , and the order in which tables are evaluated or joined 如果該查詢包含了連接,那么優化器就必須確定連接計劃( hash 、 sort merge或nested loop ) ,以及評估或連接表的次序。
Join plan directives that force optimizer to use the designated join method to join tables in the query , either nested loop join , sort merge join , or dynamic hash join 連接計劃指示,強制優化器使用指定的連接方法來連接查詢中的表,要么是嵌套循環連接、分類合并連接,要么是動態哈希連接。
For detecting - analyzing method based on snapshot difference , we implement these snapshot differential algorithm : sort merge algorithm , partition hash algorithm and window algorithm . for detecting - analyzing method based on log , we discuss the analyzing method of log on two relation database systems - oracle and sql server 對基于快照差分的檢測分析方法,我們實現了三種快照差分算法: sortmefge算法、 partitionhash算法和wndow算法;對基于日志的檢測分析方法,討論了oracle和sqlserver兩種關系數據庫的日志分析方法。