Fix #6184: skip unused column removal right after a filter with entries in the projection map #6221
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
… entries in the projection map
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #6184
The subquery flattener inserted a filter with entries in the
projection_mapwhen using aLIMITin a correlated subquery. Normally entries in theprojection_mapare only added after theRemoveUnusedColumnsoptimizer is called (by a different optimizer) - and the optimizer did not correctly take these entries into account. This PR fixes the issue by skipping pruning of columns under a filter with entries set in theprojection_map.