利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

65 条记录 (耗时 0.022 秒)

    Optimizing a query to a partitioned database table using a virtual maintained temporary index that spans multiple database partitions
    4.
    发明授权
    Optimizing a query to a partitioned database table using a virtual maintained temporary index that spans multiple database partitions 有权
    使用跨多个数据库分区的虚拟维护临时索引来优化对分区数据库表的查询

    公开(公告)号：US08935231B2

    公开(公告)日：2015-01-13

    申请号：US12120582

    申请日：2008-05-14

    申请人： Robert Joseph Bestgen ,  Robert Victor Downer ,  Shantan Kethireddy

    发明人： Robert Joseph Bestgen ,  Robert Victor Downer ,  Shantan Kethireddy

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30327

    摘要： A query optimizer optimizes a query to a partitioned database table by determining common characteristics of the partitions and generating a virtual maintained temporary index that spans multiple partitions. Using the virtual maintained temporary index allows the query optimizer to generate an access plan based on the virtual maintained temporary index, which relieves the optimizer from having to individually optimize access to each partition for partitions that share common characteristics.

    摘要翻译： 查询优化器通过确定分区的共同特征并生成跨多个分区的虚拟维护临时索引来优化对分区数据库表的查询。 使用虚拟维护的临时索引允许查询优化器基于虚拟维护的临时索引生成访问计划，这减轻了优化器必须单独优化对共享共同特征的分区的每个分区的访问。

    Obtaining a plan for executing a query in a relational database
    5.
    发明授权
    Obtaining a plan for executing a query in a relational database 失效
    获取在关系数据库中执行查询的计划

    公开(公告)号：US07937385B2

    公开(公告)日：2011-05-03

    申请号：US12114913

    申请日：2008-05-05

    申请人： Robert J. Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew P. Passe ,  Ulrich Thiemann

    发明人： Robert J. Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew P. Passe ,  Ulrich Thiemann

    IPC分类号： G06F17/30

    CPC分类号： G06F17/3048 ,  G06F17/30463

    摘要： A plan for executing a query in a relational database is obtained. A query for accessing data in the relational database is received. The query specifies N tables in the relational database from which data is to be retrieved. A determination is made whether a syntax of the query matches a syntax of a plan in a plan cache for executing the query. Matches are identified between generic table formats of the N tables specified in the query to generic table formats of N tables specified in the plan responsive to the syntax of the query matching the syntax of a plan in the plan cache for executing the query. The plan for executing the query is obtained based on whether the syntax of the query matches the syntax of the plan and based on identified matches between the generic table formats of the N tables specified in the query to the generic table formats of the N tables specified in the plan.

    摘要翻译： 获得在关系数据库中执行查询的计划。 接收到关系数据库中访问数据的查询。 该查询指定要从中检索数据的关系数据库中的N个表。 确定查询的语法是否符合用于执行查询的计划高速缓存中的计划的语法。 在查询中指定的N个表的通用表格式之间的匹配在计划中指定的N个表的通用表格式中被标识，响应于查询的语法，该查询的语法与计划缓存中用于执行查询的计划的语法相匹配。 执行查询的计划是基于查询的语法是否符合计划的语法，并且基于查询中指定的N个表的通用表格格式与指定的N个表的通用表格式之间的所确定的匹配来获得 在计划中。

    Organizing Databases for Energy Efficiency
    6.
    发明申请
    Organizing Databases for Energy Efficiency 有权
    组织能源效率数据库

    公开(公告)号：US20090282272A1

    公开(公告)日：2009-11-12

    申请号：US12117047

    申请日：2008-05-08

    申请人： Robert J. Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew P. Passe ,  Ulrich Thiemann

    发明人： Robert J. Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew P. Passe ,  Ulrich Thiemann

    IPC分类号： G06F1/32

    CPC分类号： G06F1/3203 ,  G06F1/206 ,  G06F17/30312 ,  Y02D10/16 ,  Y02D10/45

    摘要： Embodiments of the invention provide techniques for optimizing database queries for energy efficiency. In general, a query optimizer is configured to compare energy requirements of query plans, and to select a query plan requiring minimal energy to execute. In one embodiment, the query optimizer may also compare time performance of the query plans, and may select a query plan by matching to a user preference for a relative priority between energy requirements and time performance.

    摘要翻译： 本发明的实施例提供了用于优化能量效率的数据库查询的技术。 通常，查询优化器被配置为比较查询计划的能量需求，并选择需要最少能量执行的查询计划。 在一个实施例中，查询优化器还可以比较查询计划的时间性能，并且可以通过与能量需求和时间性能之间的相对优先级的用户偏好匹配来选择查询计划。

    Method and apparatus for dynamically associating different query execution strategies with selective portions of a database table
    8.
    发明申请
    Method and apparatus for dynamically associating different query execution strategies with selective portions of a database table 失效
    用于将不同查询执行策略与数据库表的选择性部分动态关联的方法和装置

    公开(公告)号：US20070016558A1

    公开(公告)日：2007-01-18

    申请号：US11181713

    申请日：2005-07-14

    申请人： Robert Bestgen ,  Shantan Kethireddy ,  Jeffrey Tenner

    发明人： Robert Bestgen ,  Shantan Kethireddy ,  Jeffrey Tenner

    IPC分类号： G06F17/30

    CPC分类号： G06F17/3053 ,  G06F17/30545

    摘要： A query facility for database queries dynamically determines whether selective portions of a database table are likely to benefit from separate query execution strategies, and constructs an appropriate separate execution strategies accordingly. Preferably, the database contains at least one relatively large table comprising multiple partitions, each sharing the definitional structure of the table and containing a different respective discrete subset of the table records. The query facility compares metadata for different partitions to determine whether sufficiently large differences exist among the partitions, and in appropriate cases selects one or more partitions for separate execution strategies. Preferably, partitions are ranked for separate evaluation using a weighting formula which takes into account: (a) the number of indexes for the partition, (b) recency of change activity, and (c) the size of the partition.

    摘要翻译： 用于数据库查询的查询工具动态地确定数据库表的选择性部分是否可能受益于单独的查询执行策略，并相应地构建适当的单独的执行策略。 优选地，数据库包含至少一个包括多个分区的相对较大的表，每个分区共享表的定义结构，并且包含表记录的不同相应离散子集。 查询设施比较不同分区的元数据，以确定分区之间是否存在足够大的差异，并且在适当的情况下选择一个或多个分区用于单独的执行策略。 优选地，使用考虑到的加权公式对分区进行分级评估：（a）分区的索引的数量，（b）更改活动的新近度，以及（c）分区的大小。

    Generating database query plans
    9.
    发明授权
    Generating database query plans 失效
    生成数据库查询计划

    公开(公告)号：US08312007B2

    公开(公告)日：2012-11-13

    申请号：US12117070

    申请日：2008-05-08

    申请人： Robert J. Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew P. Passe ,  Ulrich Thiemann

    发明人： Robert J. Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew P. Passe ,  Ulrich Thiemann

    IPC分类号： G06F7/00 ,  G06F17/30

    CPC分类号： G06F17/30463 ,  Y02D10/45

    摘要： Embodiments of the invention provide techniques for optimizing database queries for energy efficiency. In general, a query optimizer is configured to compare energy requirements of query plans, and to select a query plan requiring minimal energy to execute. In one embodiment, the query optimizer may also compare time performance of the query plans, and may select a query plan by matching to a user preference for a relative priority between energy requirements and time performance.

    摘要翻译： 本发明的实施例提供了用于优化能量效率的数据库查询的技术。 通常，查询优化器被配置为比较查询计划的能量需求，并选择需要最少能量执行的查询计划。 在一个实施例中，查询优化器还可以比较查询计划的时间性能，并且可以通过与能量需求和时间性能之间的相对优先级的用户偏好匹配来选择查询计划。

    Aggregating database queries
    10.
    发明授权
    Aggregating database queries 失效
    聚合数据库查询

    公开(公告)号：US07958158B2

    公开(公告)日：2011-06-07

    申请号：US12142182

    申请日：2008-06-19

    申请人： Robert Joseph Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew Peter Passe ,  Ulrich Thiemann

    发明人： Robert Joseph Bestgen ,  Wei Hu ,  Shantan Kethireddy ,  Andrew Peter Passe ,  Ulrich Thiemann

    IPC分类号： G06F7/00

    CPC分类号： G06F17/30442 ,  Y02D10/45

    摘要： Embodiments of the invention provide techniques for aggregating database queries for energy efficiency. In one embodiment, queries received by a DBMS are aggregated and staged according to hard-disk drives required for query execution. Each group of queries accessing a given drive may be dispatched for execution together. Further, the queries received by a DBMS may be matched to patterns of previously received queries. The matching patterns may be used to predict other queries which are likely to be received by the DBMS. The received queries may be staged to be dispatched with the predicted queries. By aggregating queries to be executed, access to each hard-disk drive may be optimized, thus reducing the overall energy consumption required for executing the queries.

    摘要翻译： 本发明的实施例提供了用于聚合用于能量效率的数据库查询的技术。 在一个实施例中，由DBMS接收的查询根据查询执行所需的硬盘驱动器进行聚合和分段。 可以一起调度访问给定驱动器的每组查询。 此外，由DBMS接收的查询可以与之前接收到的查询的模式相匹配。 匹配模式可用于预测DBMS可能接收到的其他查询。 所接收的查询可以被分段以用预测的查询进行调度。 通过聚合要执行的查询，可以优化对每个硬盘驱动器的访问，从而降低执行查询所需的总体能量消耗。