planner: move fields from ast.Prepared to planner.PlanCacheStmt

[qw4990]

What problem does this PR solve?

Issue Number: ref #51407

Problem Summary: planner: move fields from ast.Prepared to planner.PlanCacheStmt

What changed and how does it work?

NO LOGICAL CHANGE, ONLY REFACTOR

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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[bb7133]

LGTM

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-07 07:13:14.739647544 +0000 UTC m=+773656.267188089: ☑️ agreed by AilinKid.
• 2024-04-07 07:18:23.659511834 +0000 UTC m=+773965.187052380: ☑️ agreed by bb7133.

[qw4990]

/test mysql-test

[tiprow]

@qw4990: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/test mysql-test

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, bb7133, time-and-fate

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[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 5 lines in your changes missing coverage. Please review.

Project coverage is 74.3899%. Comparing base (03f8dd1) to head (105f964).
Report is 1483 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #52373        +/-   ##
================================================
+ Coverage   72.1574%   74.3899%   +2.2325%     
================================================
  Files          1467       1467                
  Lines        426786     426962       +176     
================================================
+ Hits         307958     317617      +9659     
+ Misses        99631      89564     -10067     
- Partials      19197      19781       +584     

Flag	Coverage Δ
integration	48.8218% <65.7142%> (?)
unit	71.0495% <82.8571%> (+0.0135%)	⬆️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	49.5580% <ø> (+8.6753%)	⬆️

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #53696.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #53705.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #56884.