Parameter-sensitive plans for structural scenarios
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United States of America Patent
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Apr 26, 2011
Grant Date -
Dec 18, 2008
app pub date -
Jun 15, 2007
filing date -
Jun 15, 2007
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Abstract
Systems and methods that generate specialized plans for compiling SQL queries. A plan generator component scans the query representation for parameter sensitive predicates and evaluates each predicate individually based on the parameter values. Accordingly, queries can be identified not only based on their structures, but also based on their parameter conditions. The specialized plans are more efficient for particular values, wherein queries that employ such values are optimally executed.
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