planner: add some e2e test cases for outer join elimination

[qw4990]

What problem does this PR solve?

Issue Number: ref #54057

Problem Summary: planner: add some e2e test cases for outer join elimination

What changed and how does it work?

1. Add some e2e test cases for outer join elimination
2. Rename Schema's Keys and UniqueKeys to PKOrUK and NullableUK to be more clear.

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 @qw4990. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 93.10345% with 4 lines in your changes missing coverage. Please review.

Project coverage is 73.6218%. Comparing base (4e6468d) to head (cbfbb8a).
Report is 1 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58070        +/-   ##
================================================
+ Coverage   73.2161%   73.6218%   +0.4056%     
================================================
  Files          1676       1676                
  Lines        462084     462124        +40     
================================================
+ Hits         338320     340224      +1904     
+ Misses       102995     101124      -1871     
- Partials      20769      20776         +7     

Flag	Coverage Δ
integration	43.1683% <77.5862%> (?)
unit	72.3139% <93.1034%> (-0.0445%)	⬇️

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	45.9728% <ø> (-0.0121%)	⬇️

[windtalker]

others lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, windtalker

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Needs approval from an approver in each of these files:

• pkg/expression/OWNERS [windtalker]
• pkg/planner/OWNERS [hawkingrei]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-09 06:07:51.780563568 +0000 UTC m=+245861.869366105: ☑️ agreed by hawkingrei.
• 2024-12-09 06:15:39.549056754 +0000 UTC m=+246329.637859296: ☑️ agreed by windtalker.

[qw4990]

/test check-dev2

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/test check-dev2

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[qw4990]

/retest

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In response to this:

/retest

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