| 发明名称 |
Adaptively reordering joins during query execution |
| 摘要 |
A method is disclosed for executing a predetermined query plan, the method comprising: executing a portion of the query plan; providing a reordered query plan; comparing ranking metrics for the query plans; and executing the query plan having the lower ranking metric.
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| 申请公布号 |
US7774336(B2) |
申请公布日期 |
2010.08.10 |
| 申请号 |
US20070852784 |
申请日期 |
2007.09.10 |
| 申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BEYER KEVIN SCOTT;COLBY LATHA SANKAR;LI QUANZHONG;LOHMAN GUY MARING;MARKL VOLKER GERHARD;SHAO MINGLONG |
| 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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