expression: use maximum length for integer display (#56463)

[ti-chi-bot]

This is an automated cherry-pick of #56463

What problem does this PR solve?

Issue Number: close #56462 close #45338 close #41719

Problem Summary:

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.

Issues related to casting integers with a non-default display width to strings have been fixed.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 6 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.1@68b29d4). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.1     #56927   +/-   ##
================================================
  Coverage               ?   71.5691%           
================================================
  Files                  ?       1468           
  Lines                  ?     428330           
  Branches               ?          0           
================================================
  Hits                   ?     306552           
  Misses                 ?     101292           
  Partials               ?      20486           

Flag	Coverage Δ
unit	71.5691% <66.6666%> (?)

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

Components	Coverage Δ
dumpling	52.9656% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	41.1111% <0.0000%> (?)

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [XuHuaiyu,lance6716]
• pkg/expression/OWNERS [XuHuaiyu]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-03 02:46:55.845588013 +0000 UTC m=+1123003.465242523: ☑️ agreed by lance6716.
• 2024-12-05 08:23:11.211512292 +0000 UTC m=+1315978.831166808: ☑️ agreed by XuHuaiyu.