planner: check virtual column for tiflash (#36771)

[ti-srebot]

cherry-pick #36771 to release-6.2
You can switch your code base to this Pull Request by using git-extras:

# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/36786

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/tidb.git pr/36786:release-6.2-dd2e07658aec

---

Signed-off-by: xufei xufeixw@mail.ustc.edu.cn

What problem does this PR solve?

Issue Number: close #36773, close pingcap/tiflash#5513

Problem Summary:

What is changed and how it works?

TiFlash does not support virtual column, so if the table scan contains virtual column, it can not read from TiFlash

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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• XuHuaiyu
• windtalker

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[ti-srebot]

/run-all-tests

[ti-srebot]

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

[windtalker]

LGTM

[sre-bot]

Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/cbb0dce987c5f46a8326ed5bd5bf4c579d7dd555

[windtalker]

/merge

[ti-chi-bot]

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

Commit hash: cbb0dce