Processing queries using hybrid access paths
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United States of America Patent
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May 16, 2017
Grant Date -
Oct 29, 2015
app pub date -
Apr 23, 2014
filing date -
Apr 23, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments of techniques related to optimizing and processing queries are disclosed. In one embodiment, a query to access data of one or more databases is received, and a hybrid access path for accessing the data is generated. Generating the hybrid access path may include determining a plurality of candidate access paths and respective path cost values and selecting, based on the respective path cost values, two or more candidate access paths from the plurality of candidate access paths. Generating the hybrid access path may include generating, based on the two or more candidate access paths, the hybrid access path, the hybrid access path including at least one decision point and a set of options. The at least one decision point of the hybrid access path may indicate a difference between two or more candidate sequences of operations of candidate access paths from the two or more candidate access paths.
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