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[WIP] Improve like perf for utf8 ci collations #10400

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[WIP] Improve like perf for utf8 ci collations #10400

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@ChangRui-Ryan ChangRui-Ryan commented Sep 3, 2025 •
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What problem does this PR solve?

Issue Number: close #10399

Problem Summary:

What is changed and how it works?

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No code

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

None

@ti-chi-bot ti-chi-bot bot added release-note-none Denotes a PR that doesn't merit a release note. do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. labels Sep 3, 2025
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ti-chi-bot bot commented Sep 3, 2025

[APPROVALNOTIFIER] This PR is NOT APPROVED

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@ti-chi-bot ti-chi-bot bot added the size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. label Sep 3, 2025
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/retest

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Improve like perf for utf8 CI collation
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