Abfrageanalyse

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Die Abfrageanalyse ist ein Datenbankprozess, bei dem SQL verwendet wird, um Abfragen zu untersuchen und für eine bessere Leistung zu optimieren. Sie spielt eine entscheidende Rolle bei der Abfrageverarbeitung, indem sie die Gesamtperformance verbessert und zu schnelleren Datenbankoperationen führt. Hierzu bewertet ein Abfrageoptimierer einzelne Abfrageanweisungen und generiert sowohl lokale als auch entfernte Zugriffspläne auf der Grundlage der mit jedem Plan verbundenen Ressourcenkosten. Die Datenbank wählt dann den Plan aus, der voraussichtlich die Abfrage mit den geringsten Ressourcenkosten verarbeiten wird.

https://www.techopedia.com/definition/30357/query-analysis

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