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公开(公告)号：US20090030875A1
公开(公告)日：2009-01-29
申请号：US12140994
申请日：2008-06-17
IPC分类号： G06F17/30
CPC分类号： G06F17/30536 , G06F17/30306 , Y10S707/99934 , Y10S707/99943 , Y10S707/99945
摘要： Disclosed is a technique for maintaining statistics. A query is received. Column group generation is performed to form one or more column groups. Column group refinement is performed based on statistics data generated for a previously received query. A statistics check is automatically performed. A statistics collection command is generated to obtain statistics.
摘要翻译： 公开了一种维护统计的技术。 接收到查询。 执行列组生成以形成一个或多个列组。 基于针对先前接收到的查询生成的统计数据执行列组细化。 统计检查自动执行。 生成统计信息收集命令，获取统计信息。
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公开(公告)号：US07412439B2
公开(公告)日：2008-08-12
申请号：US10752915
申请日：2004-01-07
CPC分类号： G06F17/30536 , G06F17/30306 , Y10S707/99934 , Y10S707/99943 , Y10S707/99945
摘要： Disclosed is a technique for maintaining statistics. A query is received. Column group generation is performed to form one or more column groups. Column group refinement is performed based on statistics data generated for a previously received query. A statistics check is automatically performed. A statistics collection command is generated to obtain statistics.
摘要翻译： 公开了一种维护统计的技术。 接收到查询。 执行列组生成以形成一个或多个列组。 基于针对先前接收到的查询生成的统计数据执行列组细化。 统计检查自动执行。 生成统计信息收集命令，获取统计信息。
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公开(公告)号：US07984024B2
公开(公告)日：2011-07-19
申请号：US12140994
申请日：2008-06-17
CPC分类号： G06F17/30536 , G06F17/30306 , Y10S707/99934 , Y10S707/99943 , Y10S707/99945
摘要： Disclosed is a technique for maintaining statistics. A query is received. Column group generation is performed to form one or more column groups. Column group refinement is performed based on statistics data generated for a previously received query. A statistics check is automatically performed. A statistics collection command is generated to obtain statistics.
摘要翻译： 公开了一种维护统计的技术。 接收到查询。 执行列组生成以形成一个或多个列组。 基于针对先前接收到的查询生成的统计数据执行列组细化。 统计检查自动执行。 生成统计信息收集命令，获取统计信息。
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公开(公告)号：US07302422B2
公开(公告)日：2007-11-27
申请号：US10824856
申请日：2004-04-14
CPC分类号： G06F17/30306 , Y10S707/99932 , Y10S707/99934
摘要： In various embodiments, a method, apparatus, and article of manufacture collect statistics in a database management system. A workload comprising a plurality of database queries is received. Query statistics for the database queries are identified. The query statistics for the database queries are consolidated to provide consolidated statistics. One or more statistics collection requests are generated based on the consolidated statistics.
摘要翻译： 在各种实施例中，方法，装置和制品在数据库管理系统中收集统计数据。 接收包括多个数据库查询的工作负载。 识别数据库查询的查询统计信息。 合并数据库查询的查询统计信息以提供统一统计信息。 基于统一统计信息生成一个或多个统计信息收集请求。
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公开(公告)号：US07814072B2
公开(公告)日：2010-10-12
申请号：US11028186
申请日：2004-12-30
申请人： Patrick Dooling Bossman , You-Chin Fuh , Shuanglin Guo , Chan-hua Liu , Yoichi Tsuji , Changjiu Xian
发明人： Patrick Dooling Bossman , You-Chin Fuh , Shuanglin Guo , Chan-hua Liu , Yoichi Tsuji , Changjiu Xian
IPC分类号： G06F17/00
CPC分类号： G06F17/30315
摘要： A method of, a computer program product for and a computer system for managing statistics in a database management system are provided. A value of a volatility of a statistic is determined. A value of a staleness of the statistic is determined using the value of the volatility. A statistics collection task is generated in response to, at least in part, the value of the staleness exceeding a value of a staleness threshold. The statistics collection task is executed to collect an additional value of the statistic. The additional value of the statistic is stored.
摘要翻译： 提供了一种用于管理数据库管理系统中的统计的计算机程序产品和计算机系统的方法。 确定统计量的波动率的值。 使用波动率的值确定统计量的平均值。 响应于至少部分地响应于超过平常阈值的陈旧值的值来生成统计收集任务。 执行统计信息收集任务以收集统计信息的附加值。 存储统计信息的附加值。
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公开(公告)号：US07139749B2
公开(公告)日：2006-11-21
申请号：US10373237
申请日：2003-02-24
申请人： Patrick Dooling Bossman , You-Chin Fuh , Chan-Hua Liu , Ping Wang , Yun Wang , Jie Zhang
发明人： Patrick Dooling Bossman , You-Chin Fuh , Chan-Hua Liu , Ping Wang , Yun Wang , Jie Zhang
IPC分类号： G06F17/30
CPC分类号： G06F17/30306 , Y10S707/99931 , Y10S707/99933 , Y10S707/99935 , Y10S707/99943 , Y10S707/99945
摘要： Provided are a method, system, an program for tuning a database query. Provided are a base access plan to implement the database query and statistics including information on a layout of the database against which the query will be executed. The statistics are processed to determine performance problems with the base access plan as part of a first analysis of the base access plan and the determined performance problems are processed as part of a second analysis to provide an analysis of the determined performance problems and processing cost of the base access plan. Recommendations are generated to tune the base access plan to improve performance.
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公开(公告)号：US20100042631A1
公开(公告)日：2010-02-18
申请号：US12190187
申请日：2008-08-12
申请人： Yefim Shuf , Hong Min , Terence Patrick Purcell , Ou Jin , Fen-Ling Lin , Brian Thinh-Vinh Tran , Patrick Dooling Bossman
发明人： Yefim Shuf , Hong Min , Terence Patrick Purcell , Ou Jin , Fen-Ling Lin , Brian Thinh-Vinh Tran , Patrick Dooling Bossman
IPC分类号： G06F17/30
CPC分类号： G06F17/30445
摘要： Techniques for partitioning a query are provided. The techniques include establishing one or more criterion for partitioning a query, wherein the query comprises one or more tables, materializing a first of the one or more tables, partitioning the first of the one or more tables until the one or more criterion have been satisfied, and partitioning and joining a remainder of the one or more tables of the query.
摘要翻译： 提供了分割查询的技术。 这些技术包括建立用于划分查询的一个或多个标准，其中该查询包括一个或多个表，实现该一个或多个表中的第一个表，划分一个或多个表中的第一个，直到满足一个或多个标准 ，以及分割和加入查询的一个或多个表的其余部分。
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公开(公告)号：US07930294B2
公开(公告)日：2011-04-19
申请号：US12190187
申请日：2008-08-12
申请人： Yefim Shuf , Hong Min , Terence Patrick Purcell , Ou Jin , Fen-Ling Lin , Brian Thinh-Vinh Tran , Patrick Dooling Bossman
发明人： Yefim Shuf , Hong Min , Terence Patrick Purcell , Ou Jin , Fen-Ling Lin , Brian Thinh-Vinh Tran , Patrick Dooling Bossman
IPC分类号： G06F17/30
CPC分类号： G06F17/30445
摘要： Techniques for partitioning a query are provided. The techniques include establishing one or more criterion for partitioning a query, wherein the query comprises one or more tables, materializing a first of the one or more tables, partitioning the first of the one or more tables until the one or more criterion have been satisfied, and partitioning and joining a remainder of the one or more tables of the query.
摘要翻译： 提供了分割查询的技术。 这些技术包括建立用于划分查询的一个或多个标准，其中该查询包括一个或多个表，实现该一个或多个表中的第一个表，划分一个或多个表中的第一个，直到满足一个或多个标准 ，以及分割和加入查询的一个或多个表的其余部分。
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