lightning: remove some NOT NULL constraints on lightning table (#57577)

[ti-chi-bot]

This is an automated cherry-pick of #57577

What problem does this PR solve?

Issue Number: close #57578

Problem Summary:

What changed and how does it work?

#55477 change the behavior of null value insert. To adapt to this change, some NOT NULL constraints have to be removed.

Previous PR just wrongly change INSERT INTO to INSERT IGNORE INTO, which may case data correctness.

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-8.5@6404c67). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #57600   +/-   ##
================================================
  Coverage               ?   57.1101%           
================================================
  Files                  ?       1770           
  Lines                  ?     628221           
  Branches               ?          0           
================================================
  Hits                   ?     358778           
  Misses                 ?     245502           
  Partials               ?      23941           

Flag	Coverage Δ
integration	37.0904% <ø> (?)
unit	72.7956% <ø> (?)

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

Components	Coverage Δ
dumpling	52.9478% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.3192% <0.0000%> (?)

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-21 11:12:13.41638341 +0000 UTC m=+116521.036037926: ☑️ agreed by fzzf678.
• 2024-11-22 01:25:24.651497065 +0000 UTC m=+167712.271151581: ☑️ agreed by lance6716.

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, fzzf678, lance6716

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