planner: classify logical join's logic into a seperate file for later pkg move.

[AilinKid]

What problem does this PR solve?

Issue Number: ref #51664, ref #52714

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.

None

[tiprow]

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[codecov]

Codecov Report

Attention: Patch coverage is 95.92145% with 27 lines in your changes missing coverage. Please review.

Project coverage is 55.9484%. Comparing base (34dfcfa) to head (0d42acc).
Report is 12 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #54741         +/-   ##
=================================================
- Coverage   72.8339%   55.9484%   -16.8855%     
=================================================
  Files          1552       1673        +121     
  Lines        437196     609336     +172140     
=================================================
+ Hits         318427     340914      +22487     
- Misses        99182     245123     +145941     
- Partials      19587      23299       +3712     

Flag	Coverage Δ
integration	37.1848% <88.3685%> (?)
unit	71.7118% <95.9214%> (-0.1540%)	⬇️

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

Components	Coverage Δ
dumpling	52.9656% <ø> (ø)
parser	∅ <ø> (∅)
br	52.5796% <ø> (+6.7116%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-18 13:39:42.362951981 +0000 UTC m=+534004.353893449: ☑️ agreed by hawkingrei.
• 2024-07-19 07:54:34.751777006 +0000 UTC m=+599696.742718476: ☑️ agreed by qw4990.