发明名称 |
System and article of manufacture for efficient evaluation of index screening predicates |
摘要 |
Techniques are provided for processing a query using an index. It is determined whether a number of consecutive keys that evaluate to a false-positive when applying a screening predicate in the query exceeds a false-positive predefined value. One or more keys in the index are skipped in response to determining that the number of consecutive keys exceeds the false-positive predefined value.
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申请公布号 |
US7979440(B2) |
申请公布日期 |
2011.07.12 |
申请号 |
US20080276104 |
申请日期 |
2008.11.21 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
FUH YOU-CHIN;WANG PING;XIA LI;ZHEN BINGHUA |
分类号 |
G06F7/00 |
主分类号 |
G06F7/00 |
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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