Rewrite mysql PaginateBranchesFromHistoryTree query #3509
Merged
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Outdated suggestions cannot be applied.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.
What changed?
Rewrite this query to use simple boolean expressions instead of tuple comparison.
Why?
For some reason mysql ends up using a full scan for this query even though the explain query plan looks reasonable.
How did you test it?
Tested with pre-release build on pipelines.
Potential risks
Is hotfix candidate?
yes