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Sesame
Created: 18/Jan/08 02:12 PM
Updated: 20/Mar/08 08:11 PM
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| Component/s: |
Query Optimizer
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| Affects Version/s: |
None
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| Fix Version/s: |
2.0.1
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By applying a number of logical rules, a lot of the SingletonSet and EmptySet nodes can be removed from query models. For example, a join with an EmptySet can be optimized to an EmptySet, a join with a SingletonSet can be optimized to replacing the join with the second argument.
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Implemented as an optimizer implementation: QueryModelPruner.
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Improvement
Closed
Minor
Improve query optimizer: process SingletonSet and EmptySet nodes