add sql tuning best practice into tuning guide

[dbsid]

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[ti-chi-bot[bot]]

Hi @dbsid. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[Oreoxmt]

/ok-to-test

[dveeden]

Only one issue left in the checks:

ERROR: sql-tuning-best-practice.md has unclosed tags: <>.

Not sure where the issue is exactly

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[dveeden]

Maybe @mjonss can check if we could/should add more details about partitioning

[ti-chi-bot[bot]]

@mjonss: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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Very good job with examples and explanations. I only have some minor questions and suggestions!

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[mjonss]

Maybe @mjonss can check if we could/should add more details about partitioning

@dveeden I think this PR is big enough as-is, I create a follow up, #19578, instead.

[ti-chi-bot[bot]]

@Yui-Song: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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[qiancai]

Removed the needs-cherry-pick-release-8.2 label because the v8.2 docs have been archived at https://docs-archive.pingcap.com/tidb/v8.2 and will no longer receive new updates.

[Oreoxmt]

/cc @qiancai

[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2025-03-12 01:22:56.428733456 +0000 UTC m=+318932.034262378: :ballot_box_with_check: agreed by qiancai.
• 2025-03-12 03:10:09.631115054 +0000 UTC m=+325365.236643981: :ballot_box_with_check: agreed by Oreoxmt.

[Oreoxmt]

/approve

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Oreoxmt

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #20511. But this PR has conflicts, please resolve them!

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #20512. But this PR has conflicts, please resolve them!

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #20513. But this PR has conflicts, please resolve them!

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #20514.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.3: #20515. But this PR has conflicts, please resolve them!

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #20516.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.4: #20517.