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Type:
Improvement
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Query Optimization
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Fully Compatible
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QO 2022-10-31, QO 2022-11-14, QO 2022-11-28, QO 2022-12-12, QO 2022-12-26, QO 2023-01-09, QO 2023-01-23, QO 2023-03-20, QO 2023-04-03, QO 2023-04-17
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Update IntervalLowerTransport to allow sorted merge of RIDs after an index union, instead of a GroupBy.
For example:
Unique []
| projections:
| rid_0
GroupBy []
| | groupings:
| | RefBlock:
| | Variable [rid_0]
| aggregations:
Union []
| | | BindBlock:
| | | [rid_0]
| | | Source []
| | IndexScan [{'<rid>': rid_0}, scanDefName: c1, indexDefName: index1, interval: {[Const [3], Const [3]]}]
| | BindBlock:
| | [rid_0]
| | Source []
| IndexScan [{'<rid>': rid_0}, scanDefName: c1, indexDefName: index1, interval: {[Const [2], Const [2]]}]
| BindBlock:
| [rid_0]
| Source []
IndexScan [{'<rid>': rid_0}, scanDefName: c1, indexDefName: index1, interval: {[Const [1], Const [1]]}]
BindBlock:
[rid_0]
Source []
The RIDs into the groupby are going to be sorted, so sorted merge would be better
Instead of IndexScans -> Union -> GroupBy, we could have IndexScans -> SortedMerge -> Unique
- depends on
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- Closed
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