planner: fix can not found column bug (#28067)

[ti-srebot]

cherry-pick #28067 to release-5.1
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git pr https://github.com/pingcap/tidb/pull/28148

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---

What problem does this PR solve?

Issue Number: close #xxx

Problem Summary:

What is changed and how it works?

Proposal: xxx

What's Changed:

In (p *PhysicalHashJoin) attach2TaskForMpp(tasks ...task), the task maybe changed, so we should use the updated task when construct the final result task.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

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

Fix `can not found column in Schema column` error for mpp queries

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• fzhedu
• hanfei1991

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[ti-srebot]

/run-all-tests

[ti-srebot]

@windtalker you're already a collaborator in bot's repo.

[fzhedu]

/LGTM

[windtalker]

/merge

[ti-chi-bot]

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/merge

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[fzhedu]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 826b504

[ti-chi-bot]

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