planner: fix prepare select into outfile fail

[keeplearning20221]

What problem does this PR solve?

Issue Number: close

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

[sre-bot]

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1 out of 2 committers have signed the CLA.

✅ keeplearning20221
❌ aidan

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[ti-chi-bot]

Hi @keeplearning20221. 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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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[tiprow]

Hi @keeplearning20221. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[keeplearning20221]

/ok-to-test

[ti-chi-bot]

@keeplearning20221: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/ok-to-test

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[tiprow]

@keeplearning20221: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/ok-to-test

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[TonsnakeLin]

/ok-to-test

[fixdb]

@keeplearning20221 Thanks for the contribution. Can you first create a GitHub issue, then link this PR to the issue? Thanks!

[keeplearning20221]

@keeplearning20221 Thanks for the contribution. Can you first create a GitHub issue, then link this PR to the issue? Thanks!

done

[fixdb]

@keeplearning20221 Why did you close this PR?