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Chaudhuri et al., 2009 - Google Patents

Exact cardinality query optimization for optimizer testing

Chaudhuri et al., 2009

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Document ID
18273120161125851526
Author
Chaudhuri S
Narasayya V
Ramamurthy R
Publication year
Publication venue
Proceedings of the VLDB Endowment

External Links

Snippet

The accuracy of cardinality estimates is crucial for obtaining a good query execution plan. Today's optimizers make several simplifying assumptions during cardinality estimation that can lead to large errors and hence poor plans. In a scenario such as query optimizer testing …
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Classifications

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