发明名称 |
User-defined aggregate functions in database systems without native support |
摘要 |
A computer-implemented method of using a database management system (DBMS) for providing an aggregate of a plurality of entities, constructing an aggregate of said plurality of entities in a memory to provide a result, and returning the result from the memory. Constructing the aggregate in memory includes storing in the memory a plurality of intermediate aggregation results each associated with a unique identifier. The unique identifier for each intermediate result is stored in the DBMS. Each unique identifier indicates information identifying a position within a sequence of generating the intermediate result and a pointer to a location in the memory where that intermediate result is stored.
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申请公布号 |
US7181460(B2) |
申请公布日期 |
2007.02.20 |
申请号 |
US20020173402 |
申请日期 |
2002.06.18 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
COSS RAFAEL ANSELMO;STOLZE KNUT |
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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