planner: cherry-pick #45824, #45831 and #46312 | tidb-test=pr/2207

[Defined2014]

What problem does this PR solve?

Issue Number: close #45758 , close #45805, close #45804, close #46311

Problem Summary: cherry pick #45831, #45824 and #46312 for hot-fix branch

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

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

None

[tiprow]

Hi @Defined2014. Thanks for your PR.

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[Defined2014]

/test mysql-test

[tiprow]

@Defined2014: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

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/test mysql-test

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[Defined2014]

/test mysql-test

[tiprow]

@Defined2014: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/test mysql-test

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.1-20230824-v7.1.1@cf44157). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

@@                       Coverage Diff                        @@
##             release-7.1-20230824-v7.1.1     #46391   +/-   ##
================================================================
  Coverage                               ?   73.4269%           
================================================================
  Files                                  ?       1202           
  Lines                                  ?     376242           
  Branches                               ?          0           
================================================================
  Hits                                   ?     276263           
  Misses                                 ?      82326           
  Partials                               ?      17653           

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qw4990, time-and-fate

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-08-24 10:31:05.000752426 +0000 UTC m=+1404629.549768417: ☑️ agreed by time-and-fate.
• 2023-08-25 02:56:53.52022532 +0000 UTC m=+1463778.069241306: ☑️ agreed by qw4990.

[yilongrong]

Please help to merge into v7.1.2 , Thanks.