[SERVER-57611] Simplify plans for covered projections with expressions Created: 10/Jun/21 Updated: 06/Dec/22 |
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| Status: | Backlog |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Nikita Lapkov (Inactive) | Assignee: | Backlog - Query Execution |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | sbe-post-v1 | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Assigned Teams: |
Query Execution
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| Description |
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Currently, SBE plan for query
Will create an intermediate object, then extract values for fields a and b, compute expression and create final object. We can skip intermediate object and compute expressions directly using slots from index scan. Same strategy is applied for inclusion projections in |
| Comments |
| Comment by Ethan Zhang (Inactive) [ 15/Jun/21 ] |
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ksuarz@gmail.com We assigned this to the feature gap project, feel free to reassign if that's not appropriate. |