ddl: Fix interval partition date only

[mjonss]

What problem does this PR solve?

first test of patch on top of fix-interval-partition

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

[ti-chi-bot]

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[ti-chi-bot]

[FORMAT CHECKER NOTIFICATION]

Notice: To remove the do-not-merge/needs-linked-issue label, please provide the linked issue number on one line in the PR body, for example: Issue Number: close #123 or Issue Number: ref #456.

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Tests

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_{📖 For more info, you can check the "Contribute Code" section in the development guide.}

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[tiprow]

Hi @mjonss. Thanks for your PR.

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[mjonss]

/ok-to-test

[codecov]

Codecov Report

Merging #48820 (84cc445) into master (1cf2826) will increase coverage by 1.5657%.
The diff coverage is 65.7142%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #48820        +/-   ##
================================================
+ Coverage   71.0861%   72.6518%   +1.5657%     
================================================
  Files          1367       1391        +24     
  Lines        404619     411282      +6663     
================================================
+ Hits         287628     298804     +11176     
+ Misses        97043      93578      -3465     
+ Partials      19948      18900      -1048     

Flag	Coverage Δ
integration	43.5048% <65.7142%> (?)
unit	71.0828% <65.7142%> (-0.0033%)	⬇️

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

Components	Coverage Δ
dumpling	53.9663% <ø> (ø)
parser	∅ <ø> (∅)
br	48.7551% <ø> (-4.2648%)	⬇️