pkg/planner: set proj.AvoidColumnEvaluator in postOptimize

[XuHuaiyu]

What problem does this PR solve?

Issue Number: close #52985

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.

Fixed an issue where certain queries were producing incorrect results. This was caused by a bug in the query processing logic related to the handling of the projection operator which is a child of Union operator.

[tiprow]

Hi @XuHuaiyu. Thanks for your PR.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.0352%. Comparing base (fd3ad81) to head (958247b).
Report is 9 commits behind head on master.

❗ Current head 958247b differs from pull request most recent head d1eebe2

Please upload reports for the commit d1eebe2 to get more accurate results.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #55333        +/-   ##
================================================
+ Coverage   72.8123%   75.0352%   +2.2229%     
================================================
  Files          1570       1571         +1     
  Lines        439607     444399      +4792     
================================================
+ Hits         320088     333456     +13368     
+ Misses        99825      90739      -9086     
- Partials      19694      20204       +510     

Flag	Coverage Δ
integration	49.5097% <93.3333%> (?)
unit	72.1744% <86.6666%> (+0.3331%)	⬆️

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

Components	Coverage Δ
dumpling	52.9567% <ø> (ø)
parser	∅ <ø> (∅)
br	52.5543% <ø> (+6.6754%)	⬆️

[hawkingrei]

/ok-to-test

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: winoros, wshwsh12

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-09 12:26:13.823219775 +0000 UTC m=+614103.690318864: ☑️ agreed by winoros.
• 2024-08-12 03:40:51.128483229 +0000 UTC m=+152935.831952870: ☑️ agreed by wshwsh12.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #55351.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #55352.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #55353.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #55354.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #55355.