add logical-import-prep-stmt

[dbsid]

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• This PR is translated from: add logical-import-prep-stmt docs#18902
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[ti-chi-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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[lilin90]

/ok-to-test

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[lilin90]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-20 03:33:34.445865052 +0000 UTC m=+1191284.186288990: ☑️ agreed by hfxsd.
• 2024-09-20 09:02:47.163713654 +0000 UTC m=+1211036.904137593: ☑️ agreed by lilin90.