Set parsed comments in operator for subqueries (#18369) #177
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Signed-off-by: David Piegza <[email protected]>
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Pull Request Overview
This PR addresses an issue where SQL comments are not properly preserved when subqueries are merged with their outer queries during query planning. The change ensures that comments from the outer query are retained in the merged operator.
- Adds logic to preserve comments when merging subqueries with outer queries
- Includes test cases demonstrating comment preservation in both merged and non-merged subquery scenarios
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| go/vt/vtgate/planbuilder/operators/subquery_planning.go | Adds comment preservation logic in the tryMergeSubqueryWithOuter function |
| go/vt/vtgate/planbuilder/testdata/select_cases.json | Adds test cases verifying comment handling with subqueries |
Signed-off-by: Mohamed Hamza <[email protected]>
Signed-off-by: Mohamed Hamza <[email protected]>
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This is a backport of vitessio#18369
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