tidb
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pingcap
planner: support HashJoin cost detail
What problem does this PR solve?
Issue Number: ref https://github.com/pingcap/tidb/issues/36962
Problem Summary:
What is changed and how it works?
Support cost detail for hashjoin
Check List
Tests
- [x] Unit test
Release note
Please refer to Release Notes Language Style Guide to write a quality release note.
None
[REVIEW NOTIFICATION]
This pull request has been approved by:
- hawkingrei
- time-and-fate
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Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/8e2ab756ad77652f9af0bc96f29429a6cd813154
