[DNM] *: add prefetch for each column

[joechenrh]

What problem does this PR solve?

Issue Number: close #xxx

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]

Hi @joechenrh. Thanks for your PR.

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[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by triage owners.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick:

1. It must be LGTMed and approved by the reviewers firstly.
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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign bb7133, benjamin2037, benmeadowcroft, d3hunter, time-and-fate, xuhuaiyu, yujuncen for approval. For more information see the Code Review Process.
Please ensure that each of them provides their approval before proceeding.

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Details

Needs approval from an approver in each of these files:

• OWNERS
• br/OWNERS
• dumpling/OWNERS
• lightning/OWNERS
• pkg/autoid_service/OWNERS
• pkg/bindinfo/OWNERS
• pkg/config/OWNERS
• pkg/ddl/OWNERS
• pkg/distsql/OWNERS
• pkg/domain/OWNERS
• pkg/executor/importer/OWNERS
• pkg/expression/OWNERS
• pkg/infoschema/OWNERS
• pkg/lightning/OWNERS
• pkg/lightning/config/OWNERS
• pkg/meta/OWNERS
• pkg/metrics/OWNERS
• pkg/owner/OWNERS
• pkg/parser/OWNERS
• pkg/planner/OWNERS
• pkg/resourcemanager/OWNERS
• pkg/session/OWNERS
• pkg/sessionctx/variable/OWNERS
• pkg/statistics/OWNERS
• pkg/table/OWNERS
• pkg/tablecodec/OWNERS

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[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 3 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (release-8.5@1fa258b). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #65861   +/-   ##
================================================
  Coverage               ?   30.2376%           
================================================
  Files                  ?       1593           
  Lines                  ?     453604           
  Branches               ?          0           
================================================
  Hits                   ?     137159           
  Misses                 ?     300579           
  Partials               ?      15866           

Flag	Coverage Δ
integration	30.2376% <85.7142%> (?)

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

Components	Coverage Δ
dumpling	∅ <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	35.8085% <0.0000%> (?)

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[ti-chi-bot]

@joechenrh: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-lightning-integration-test	a28e79c	link	true	/test pull-lightning-integration-test
pull-integration-e2e-test	a28e79c	link	true	/test pull-integration-e2e-test
pull-br-integration-test	a28e79c	link	true	/test pull-br-integration-test
pull-mysql-client-test-next-gen	a28e79c	link	true	/test pull-mysql-client-test-next-gen
pull-build-next-gen	a28e79c	link	true	/test pull-build-next-gen
pull-unit-test-ddlv1	a28e79c	link	true	/test pull-unit-test-ddlv1
pull-integration-ddl-test	a28e79c	link	true	/test pull-integration-ddl-test
pull-mysql-client-test	a28e79c	link	true	/test pull-mysql-client-test
pull-integration-realcluster-test-next-gen	a28e79c	link	true	/test pull-integration-realcluster-test-next-gen
pull-unit-test-next-gen	a28e79c	link	true	/test pull-unit-test-next-gen
idc-jenkins-ci-tidb/build	a28e79c	link	true	/test build
idc-jenkins-ci-tidb/check_dev	a28e79c	link	true	/test check-dev
idc-jenkins-ci-tidb/unit-test	a28e79c	link	true	/test unit-test

Full PR test history. Your PR dashboard.

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