executor: fix issue that query slow_query table return wrong result | tidb-test=345b2782950dafda7b4a938c84bffb7f46834add

[crazycs520]

This is an hotfix of #56356

What problem does this PR solve?

Issue Number: close #56100

Problem Summary: fix issue that query slow_query table return wrong result

What changed and how does it work?

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]

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[codecov]

Codecov Report

Attention: Patch coverage is 95.83333% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (release-7.5-20250107-v7.5.1@7d16cc7). Learn more about missing BASE report.

Additional details and impacted files

@@                       Coverage Diff                        @@
##             release-7.5-20250107-v7.5.1     #58726   +/-   ##
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  Coverage                               ?   75.9305%           
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  Lines                                  ?     449412           
  Branches                               ?          0           
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  Hits                                   ?     341241           
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  Partials                               ?      19435           

Flag	Coverage Δ
unit	75.9305% <95.8333%> (?)

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Components	Coverage Δ
dumpling	57.8735% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	56.3342% <0.0000%> (?)

[crazycs520]

/retest-required

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-07 06:01:42.142571717 +0000 UTC m=+247045.431403422: ☑️ agreed by Defined2014.
• 2025-01-07 06:02:03.836941242 +0000 UTC m=+247067.125772947: ☑️ agreed by lcwangchao.

[crazycs520]

/retest-required

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[jebter]

/retest

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, lcwangchao, tangenta

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