发明名称 |
HARDWARE IMPLEMENTATION OF THE AGGREGATION/GROUP BY OPERATION: HASH-TABLE METHOD |
摘要 |
Techniques are described for performing grouping and aggregation operations. In one embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, a group value in a row of a first column is mapped to an address. A pointer is stored for a first group at a first location identified by the address. The pointer identifies a second location of a set of aggregation data for the first group. An aggregate value included in the set of aggregation data is updated based on a value in the row of a second column. |
申请公布号 |
WO2014031416(A3) |
申请公布日期 |
2014.07.24 |
申请号 |
WO2013US55020 |
申请日期 |
2013.08.14 |
申请人 |
ORACLE INTERNATIONAL CORPORATION |
发明人 |
AMBERG, PHILIP;SCHAUER, JUSTIN;HOPKINS II, ROBERT DAVID |
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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