pl/mysql partition digraph tests - #38115
Draft
peterdukelarsen wants to merge 1 commit into
Draft
Conversation
peterdukelarsen
force-pushed
the
pl/mysql-partition-digraph-tests
branch
3 times, most recently
from
August 7, 2026 22:27
1646dcd to
c39bcea
Compare
peterdukelarsen
force-pushed
the
pl/mysql-partition-digraph-tests
branch
2 times, most recently
from
August 7, 2026 23:04
cc2f900 to
6e47fdd
Compare
peterdukelarsen
force-pushed
the
pl/mysql-partition-digraph-tests
branch
from
August 8, 2026 00:08
6e47fdd to
5fcb678
Compare
Contractions (Czech ch), expansions (ß, on the stock default collation), and ignorables (NUL) make LEFT() truncation non-monotonic with key order, handing the walk an inverted range that fails with MissingRowEstimate. One live test pins each family. A fourth test pins that trailing-space truncations under the PAD SPACE collations integration splits (bin, general_ci) stay ordered and partition cleanly.
peterdukelarsen
force-pushed
the
pl/mysql-partition-digraph-tests
branch
from
August 8, 2026 01:44
5fcb678 to
5930dfc
Compare
This file contains hidden or 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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Remove these sections if your commit already has a good description!
Motivation
Why does this change exist? Link to a GitHub issue, design doc, Slack
thread, or explain the problem in a sentence or two. A reviewer who has
no context should understand why after reading this section.
If this implements or addresses an existing issue, it's enough to link to that:
Closes
Fixes
etc.
Description
What does this PR actually do? Focus on the approach and any non-obvious
decisions. The diff shows the code --- use this space to explain what the
diff can't tell a reviewer.
Verification
How do you know this change is correct? Describe new or existing automated
tests, or manual steps you took.