Skew-based costing for database queries

One embodiment is a method that determines skew to predict costs for query plans for a database query. The method selects a query plan that accounts for the skew to evenly distribute processing load among multiple processors and then executes the query with the selected query plan.

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Hauptverfasser: Al-Omari, Awny K, Kosuru, Ramakumar, Varshneya, Renu, Wall, Robert L
Format: Patent
Sprache:eng
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creator Al-Omari, Awny K
Kosuru, Ramakumar
Varshneya, Renu
Wall, Robert L
description One embodiment is a method that determines skew to predict costs for query plans for a database query. The method selects a query plan that accounts for the skew to evenly distribute processing load among multiple processors and then executes the query with the selected query plan.
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title Skew-based costing for database queries
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