planner: add physical plan memorization for multi cascades logical alternative.

[AilinKid]

What problem does this PR solve?

Issue Number: ref #51664

Problem Summary:

What changed and how does it work?

Check List

Tests

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

  • I checked and no code files have been changed.

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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[tiprow]

Hi @AilinKid. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.6143%. Comparing base (837aec4) to head (36bd793).
Report is 2 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58832        +/-   ##
================================================
+ Coverage   73.1041%   73.6143%   +0.5101%     
================================================
  Files          1677       1677                
  Lines        463901     463961        +60     
================================================
+ Hits         339131     341542      +2411     
+ Misses       103911     101613      -2298     
+ Partials      20859      20806        -53     

Flag	Coverage Δ
integration	42.8340% <55.5555%> (?)
unit	72.4162% <100.0000%> (+0.1172%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	45.7479% <ø> (+0.0179%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei

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• pkg/planner/OWNERS [hawkingrei]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-10 03:08:13.410672291 +0000 UTC m=+495836.699503999: ☑️ agreed by hawkingrei.

[ti-chi-bot]

@AilinKid: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-unit-test-ddlv1	cdedac4	link	true	/test pull-unit-test-ddlv1

Full PR test history. Your PR dashboard.

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[AilinKid]

/test check-dev2

[tiprow]

@AilinKid: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/test check-dev2

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[AilinKid]

/ok-to-test