公开(公告)号：US20130054568A1

公开(公告)日：2013-02-28

申请号：US13597389

申请日：2012-08-29

申请人： Qi Chen ,  Shang Shun Lei ,  Yun Feng Sun ,  Guang Zhou Zhang ,  Sheng Zhao

发明人： Qi Chen ,  Shang Shun Lei ,  Yun Feng Sun ,  Guang Zhou Zhang ,  Sheng Zhao

IPC分类号： G06F17/30

CPC分类号： G06F17/30463 ,  G06F17/30477

摘要： Mechanisms for performing database queries are provided. With these mechanisms, in response to a query request, a query plan intended for minimum query response time and a query plan intended for minimum query total time for the query request are obtained execution of the minimum query response time query plan and the minimum query total time query plan is started. Before the execution of the minimum query total time query plan reaches a specified point, an initial query result obtained from the execution of the minimum query response time query plan is output. In response to the execution of the minimum query total time query plan reaching the specified point, continuing the execution of the minimum query total time query plan to output remaining query results.

摘要翻译： 提供了执行数据库查询的机制。 利用这些机制，响应于查询请求，获得旨在用于查询请求的最小查询响应时间的查询计划和用于查询请求的最小查询总时间的查询计划，执行最小查询响应时间查询计划和最小查询总计 时间查询计划开始。 在执行最小查询总时间查询计划到达指定点之前，输出从执行最小查询响应时间查询计划获得的初始查询结果。 响应于到达指定点的最小查询总时间查询计划的执行，继续执行最小查询总时间查询计划以输出剩余查询结果。

公开(公告)号：US08812485B2

公开(公告)日：2014-08-19

申请号：US13597389

申请日：2012-08-29

申请人： Qi Chen ,  Shang Shun Lei ,  Yun Feng Sun ,  Guang Zhou Zhang ,  Sheng Zhao

发明人： Qi Chen ,  Shang Shun Lei ,  Yun Feng Sun ,  Guang Zhou Zhang ,  Sheng Zhao

IPC分类号： G06F17/30

CPC分类号： G06F17/30463 ,  G06F17/30477

摘要： Mechanisms for performing database queries are provided. With these mechanisms, in response to a query request, a query plan intended for minimum query response time and a query plan intended for minimum query total time for the query request are obtained execution of the minimum query response time query plan and the minimum query total time query plan is started. Before the execution of the minimum query total time query plan reaches a specified point, an initial query result obtained from the execution of the minimum query response time query plan is output. In response to the execution of the minimum query total time query plan reaching the specified point, continuing the execution of the minimum query total time query plan to output remaining query results.

摘要翻译： 提供了执行数据库查询的机制。 利用这些机制，响应于查询请求，获得旨在用于查询请求的最小查询响应时间的查询计划和用于查询请求的最小查询总时间的查询计划，执行最小查询响应时间查询计划和最小查询总计 时间查询计划开始。 在执行最小查询总时间查询计划到达指定点之前，输出从执行最小查询响应时间查询计划获得的初始查询结果。 响应执行到达指定点的最小查询总时间查询计划，继续执行最小查询总时间查询计划以输出剩余查询结果。