planner: let exists subquery return signed int type (#57277)

[ti-chi-bot]

This is an automated cherry-pick of #57277

What problem does this PR solve?

Issue Number: close #56641

Problem Summary:
The root cause of #56641 is that exists subquery returns unsigned type in TiDB, and it is caused by that
in TiDB
expression.NewOne() and expression.NewZero() both returns unsigned integer type.
And in

tidb/pkg/planner/core/expression_rewriter.go

Lines 1105 to 1109 in 56e7093

	if (row != nil && !v.Not) || (row == nil && v.Not) {
	er.ctxStackAppend(expression.NewOne(), types.EmptyName)
	} else {
	er.ctxStackAppend(expression.NewZero(), types.EmptyName)
	}

It use expression.NewOne() and expression.NewZero() as the result of the exists subquery.

The reason why expression.NewOne() and expression.NewZero() returns unsigned integer type is hard to tell now. The only thing I know is it is introduced in this pr: #21062 . Looks like it is not related to exists subquery.
It may have high regression risk to change the return type of expression.NewOne() and expression.NewZero(), so this pr adds two new function to return signed version on constant one and constant zero.

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

[codecov]

Codecov Report

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Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #57365   +/-   ##
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  Coverage               ?   56.4419%           
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  Lines                  ?     635689           
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  Hits                   ?     358795           
  Misses                 ?     252771           
  Partials               ?      24123           

Flag	Coverage Δ
integration	37.1790% <100.0000%> (?)
unit	72.6331% <100.0000%> (?)

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Components	Coverage Δ
dumpling	52.9478% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.6110% <0.0000%> (?)

[windtalker]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, windtalker

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Needs approval from an approver in each of these files:

• OWNERS [AilinKid,windtalker]
• pkg/expression/OWNERS [windtalker]
• pkg/planner/OWNERS [AilinKid]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-14 02:32:57.674291558 +0000 UTC m=+496339.865160555: ☑️ agreed by windtalker.
• 2024-11-14 02:33:49.158631775 +0000 UTC m=+496391.349500772: ☑️ agreed by AilinKid.