[SERVER-50110] Create unit test for $alwaysTrue & $alwaysFalse to construct the MatchExpression directly without optimizing it Created: 04/Aug/20 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: | Task | Priority: | Major - P3 |
| Reporter: | Andrii Dobroshynskyi (Inactive) | Assignee: | Backlog - Query Execution |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | qexec-team, 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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The query optimizer folds a lot of tautological/contradictory filters into simpler $alwaysTrue/$alwaysFalse statements before they ever make it to stage builder. So for plenty cases in the jstests, the stage builder will see a simple AlwaysFalseMatchExpression. We want to add a unit test that directly constructs the MatchExpression without optimizing it. |
| Comments |
| Comment by Kyle Suarez [ 22/Jun/21 ] |
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andrii.dobroshynskyi, was this ticket filed because we think we don't have adequate coverage for the SBE implementation of alwaysTrue or alwaysFalse? I think this was filed back in your intern days. |