System and article of manufacture for efficient evaluation of index screening predicates

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...

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Bibliographische Detailangaben
Hauptverfasser: Fuh, You-Chin, Wang, Ping, Xia, Li, Zhen, Binghua
Format: Patent
Sprache:eng
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Zusammenfassung: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.