tiflow
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pingcap
ticdc: fix ddl `exchange partition xxxx with validation` to deal with `with validation` correctly (#10867)
This is an automated cherry-pick of #10867
What problem does this PR solve?
Issue Number: close https://github.com/pingcap/tiflow/issues/10859
What is changed and how it works?
Determine whether it is necessary to add without validation in the exchange partition.
Check List
Tests
- Manual test
test the case mentioned in issue, and check the result in downstream db.
Questions
Will it cause performance regression or break compatibility?
Do you need to update user documentation, design documentation or monitoring documentation?
Release note
Make `exchange partition` to deal with clause `with validation` correctly
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[APPROVALNOTIFIER] This PR is APPROVED
This pull-request has been approved by: CharlesCheung96, hongyunyan
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