planner: unify the way to handle txn in statshandle

[qw4990]

What problem does this PR solve?

Issue Number: ref #46905

Problem Summary: planner: unify the way to handle txn in statshandle

What is changed and how it works?

planner: unify the way to handle txn in statshandle

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

Merging #47859 (5c25c1f) into master (9f97c9a) will increase coverage by 0.9280%.
Report is 5 commits behind head on master.
The diff coverage is 91.6666%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #47859        +/-   ##
================================================
+ Coverage   71.8756%   72.8037%   +0.9280%     
================================================
  Files          1399       1422        +23     
  Lines        405325     411810      +6485     
================================================
+ Hits         291330     299813      +8483     
+ Misses        94353      93144      -1209     
+ Partials      19642      18853       -789     

Flag	Coverage Δ
integration	41.4921% <75.0000%> (?)
unit	71.8620% <91.6666%> (-0.0137%)	⬇️

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

Components	Coverage Δ
dumpling	53.9913% <ø> (ø)
parser	∅ <ø> (∅)
br	48.7079% <ø> (-4.2693%)	⬇️

[Rustin170506]

Thanks! 👍🏿

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, hi-rustin

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-10-20 08:26:35.858914387 +0000 UTC m=+1991193.446024528: ☑️ agreed by hawkingrei.
• 2023-10-20 08:42:57.491381089 +0000 UTC m=+1992175.078491234: ☑️ agreed by hi-rustin.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #47889.