*: simple code

[hawkingrei]

What problem does this PR solve?

Issue Number: close #xxx

Problem Summary:

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

[codecov]

Codecov Report

Merging #46247 (30e96ec) into master (0b2d62b) will decrease coverage by 0.6678%.
The diff coverage is 100.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #46247        +/-   ##
================================================
- Coverage   73.3737%   72.7060%   -0.6678%     
================================================
  Files          1285       1306        +21     
  Lines        394836     401026      +6190     
================================================
+ Hits         289706     291570      +1864     
- Misses        86678      90945      +4267     
- Partials      18452      18511        +59     

Flag	Coverage Δ
integration	25.5824% <33.3333%> (?)
unit	73.3860% <100.0000%> (+0.0122%)	⬆️

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

Components	Coverage Δ
dumpling	54.0444% <ø> (ø)
parser	85.0775% <ø> (+0.0108%)	⬆️
br	47.8999% <ø> (-4.3507%)	⬇️

[hawkingrei]

/test all

[hawkingrei]

/retest

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lance6716, qw4990

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [lance6716,qw4990]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-08-20 13:40:00.100984009 +0000 UTC m=+1070364.649999981: ☑️ agreed by lance6716.
• 2023-08-21 02:09:33.032573113 +0000 UTC m=+1115337.581589100: ☑️ agreed by qw4990.