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专利名称：HIERARCHICAL WINDOW DATABASE QUERY
EXECUTION
发明人：BRUNEL, Robert,MAY, Norman申请号：EP17001219.9申请日：20170717公开号：EP32733A1公开日：20180124
专利附图：
摘要：Addressed herein is the problem of expressing and evaluating computations onhierarchies represented as database tables. Engine support for such computations is verylimited today, and so they are usually outsourced into stored procedures or client code.
Structural grouping is applied to relational algebra to provide concise syntax to express aclass of useful computations. Algorithms are also provided to evaluate such structuralgroupings efficiently by exploiting available indexing schemes. Related apparatus,systems, techniques and articles are also described.
申请人：SAP SE
地址：Dietmar-Hopp-Allee 16 69190 Walldorf DE
国籍：DE
代理机构：Müller-Boré & Partner Patentanwälte PartG mbB
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