LEVERAGING QUERY-SPECIFIC STATISTICS IN NON-EQUIVALENT QUERIES

Techniques for processing queries are provided. In one approach, an execution plan for a query includes multiple sub-plans, one or more of which are selected at runtime while one or more other sub-plans are not executed during execution of the execution plan. In another approach, data about misestim...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Su Hong, Chakkappen Sunil P, Zait Mohamed
Format: Patent
Sprache:eng
Schlagworte:
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