planner: fix the issue about simplify outer join to inner join (#51750) | tidb-test=pr/2318

[ti-chi-bot]

This is an automated cherry-pick of #51750

What problem does this PR solve?

Issue Number: close #51560

Problem Summary:

The original codes will push the predicates that are not related to that child.

What changed and how does it work?

Don't do the recursively. Let the predicate-push-down to do the recursively.

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

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, winoros

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• OWNERS [hawkingrei,winoros]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-16 12:54:56.517006714 +0000 UTC m=+342715.628053160: ☑️ agreed by winoros.
• 2024-04-16 12:57:56.02747723 +0000 UTC m=+342895.138523681: ☑️ agreed by hawkingrei.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.1@5bf91c6). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

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  Partials               ?      17822