发明名称 |
System and method for optimizing queries with aggregates and collection conversions |
摘要 |
Systems and methods for optimizing database queries involving aggregates identify instantiations of rules in an internal language representation of the original query, and then applies the rules to those instantiations to form an optimized query execution plan.
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申请公布号 |
US6240406(B1) |
申请公布日期 |
2001.05.29 |
申请号 |
US19980144281 |
申请日期 |
1998.08.31 |
申请人 |
THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA |
发明人 |
TANNEN VAL BREAZU |
分类号 |
G06F17/30;(IPC1-7):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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