发明名称 |
Time slider operator for temporal data aggregation |
摘要 |
<p>Calculation of aggregated values in a history database table can be optimized using an approach in which an ordered history table is accessed. The ordered history table can include a sequential listing of commit identifiers associated with updates, insertions, and/or deletions to values in the database table. The ordered history table can be traversed in a single pass to calculate an aggregation function using an optimized algorithm. The optimized algorithm can enable calculation of an aggregated metric of the values based on a selected method for tracking invalidated values to their corresponding commit identifiers. The calculated metric is generated for a current version of the database table; and promoted.</p> |
申请公布号 |
EP2608073(A1) |
申请公布日期 |
2013.06.26 |
申请号 |
EP20120006573 |
申请日期 |
2012.09.19 |
申请人 |
SAP AG |
发明人 |
KAUFMANN, MARTIN;MAY, NORMAN;TONDER, ANDREAS;KOSSMANN, DONALD |
分类号 |
G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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