add some point desc

[glkappe]

analyze table

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What is changed, added or deleted? (Required)

Which TiDB version(s) do your changes apply to? (Required)

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By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions (in Chinese).

• master (the latest development version)
• v6.3 (TiDB 6.3 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)
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• Delete files
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[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Oreoxmt
• TomShawn

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[Oreoxmt]

Rest LGTM

[Oreoxmt]

/merge

[ti-chi-bot]

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

Commit hash: 9427b08

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #11467.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #11468.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #11469.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #11470.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #11471.