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1. 发明公开

EP1770555A1 Efficient handling of multipart queries against relational data 审中-公开
标题翻译： Effiziente Verarbeitung von mehrteiligen Anfragen auf relationalen Daten
公开(公告)号：EP1770555A1
公开(公告)日：2007-04-04
申请号：EP06020600.0
申请日：2006-09-29
申请人： SAP AG
发明人： Bartholomae, Christian , Dipper, Stefan , Faerber, Franz , Marschall, Erich , Radestock, Guenter
IPC分类号： G06F17/30
CPC分类号： G06F17/30501 , Y10S707/99933
摘要： A query having multiple parts may be processed to form an intermediate results set. This intermediate results set may be partitioned into a plurality of groups. Thereafter, the groups may be sorted into a plurality of containers so that each container contains data sufficient to calculate one requested result in the multipart query. Related techniques, apparatuses, systems, and computer program products are also described.
摘要翻译：可以处理具有多个部分的查询以形成中间结果集。该中间结果集可以被划分成多个组。此后，可以将组分组成多个容器，使得每个容器包含足以在多部分查询中计算一个请求结果的数据。还描述了相关技术，装置，系统和计算机程序产品。

2. 发明公开

EP1995878A2 Block compression of tables with repeated values 有权转让
标题翻译：表的块压缩与重复值
公开(公告)号：EP1995878A2
公开(公告)日：2008-11-26
申请号：EP08008447.8
申请日：2008-05-05
申请人： SAP AG
发明人： Faerber, Franz , Radestock, Guenter , Ross, Andrew
IPC分类号： H03M7/30
CPC分类号： G06F17/30153 , G06F17/30315 , G06F17/30321 , H03M7/3084 , H03M7/3088
摘要： Methods and apparatus, including computer program products, for block compression of tables with repeated values. In general, value identifiers representing a compressed column of data may be sorted to render repeated values contiguous, and block dictionaries may be generated. A block dictionary may be generated for each block of value identifiers. Each block dictionary may include a list of block identifiers, where each block identifier is associated with a value identifier and there is a block identifier for each unique value in a block. Blocks may have standard sizes and block dictionaries may be reused for multiple blocks.

3. 发明公开

EP1995877A1 Compression of tables based on occurence of values 有权转让
标题翻译： Komprimierung von Tabellen basierend auf derWerthäufigkeit
公开(公告)号：EP1995877A1
公开(公告)日：2008-11-26
申请号：EP08005176.6
申请日：2008-03-19
申请人： SAP AG
发明人： Faerber, Franz , Radestock, Guenter , Ross, Andrew
IPC分类号： H03M7/30 , G06F17/30
CPC分类号： G06F17/30324 , G06F17/30477 , H03M7/30
摘要： Methods and apparatus, including computer program products, for compression of tables based on occurrence of values. In general, a number representing an amount of occurrences of a frequently occurring value in a group of adjacent rows of a column is generated (428), a vector representing whether the frequently occurring value exists in a row of the column is generated (422), and the number and the vector are stored to enable searches of the data represented by the number and the vector. The vector may omit a portion representing the group of adjacent rows (424). The values maybe dictionary-based compression values representing business data such as business objects. The values of the column may be sorted in order to increase the compression (416,418). The compression may be performed in-memory, in parallel, to improve memory utilization, network bandwidth consumption, and processing performance.
摘要翻译：方法和设备，包括计算机程序产品，用于根据值的发生压缩表。通常，生成表示列的相邻行的频繁出现值的出现次数（428），生成表示频繁出现的值是否存在于列的行中的矢量（422），并且存储数字和矢量以便能够搜索由数字和矢量表示的数据。矢量可以省略表示相邻行组（424）的部分。这些值可能是基于字典的压缩值，表示业务数据，如业务对象。可以对列的值进行排序以增加压缩（416,418）。可以并行地在内存中执行压缩，以提高存储器利用率，网络带宽消耗和处理性能。

4. 发明公开

EP1995878A3 Block compression of tables with repeated values 有权转让
标题翻译：遏制Vell Tabellen mit Wiederholten Werten
公开(公告)号：EP1995878A3
公开(公告)日：2009-07-08
申请号：EP08008447.8
申请日：2008-05-05
申请人： SAP AG
发明人： Faerber, Franz , Radestock, Guenter , Ross, Andrew
IPC分类号： H03M7/30
CPC分类号： G06F17/30153 , G06F17/30315 , G06F17/30321 , H03M7/3084 , H03M7/3088
摘要： Methods and apparatus, including computer program products, for block compression of tables with repeated values. In general, value identifiers representing a compressed column of data may be sorted to render repeated values contiguous, and block dictionaries may be generated. A block dictionary may be generated for each block of value identifiers. Each block dictionary may include a list of block identifiers, where each block identifier is associated with a value identifier and there is a block identifier for each unique value in a block. Blocks may have standard sizes and block dictionaries may be reused for multiple blocks.
摘要翻译：方法和装置，包括计算机程序产品，用于块重复值压缩表。通常，表示压缩数据列的值标识符可以被排序以使得重复值连续，并且可以生成块字典。可以为每个值标识符块生成块字典。每个块字典可以包括块标识符的列表，其中每个块标识符与值标识符相关联，并且对于块中的每个唯一值存在块标识符。块可以具有标准尺寸，并且块字典可以被重复用于多个块。

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