| Key: |
SES-518
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| Type: |
Improvement
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| Status: |
Reopened
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| Priority: |
Minor
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| Assignee: |
Unassigned
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| Reporter: |
Arjohn Kampman
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| Votes: |
0
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| Watchers: |
0
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If you were logged in you would be able to see more operations.
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Sesame
Created: 18/Jan/08 02:49 PM
Updated: 02/Sep/08 02:43 PM
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| Component/s: |
Query Optimizer
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| Affects Version/s: |
None
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| Fix Version/s: |
3.x
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The SameTermOptimizer processes nodes of the form SameTerm(?x, ?y) by renaming ?y to ?x in the tree below the SameTerm filter. As ?y might still be referenced toward the root of the query model, the optimizer inserts an Extension ?y <-- ?x node. This can be prevented by renaming ?y in this part of the tree too.
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Replace variable names all the way up to and including Projection in revision 7423.
Implemented has been reverted since it broke all DESCRIBE queries.
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SameTermOptimizer: rename variables instead of adding Extension elements