[fix](date_function) fix str_to_date function return wrong microsecond issue#47252
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yiguolei merged 4 commits intoapache:branch-2.1from Jan 24, 2025
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…d issue (apache#47129) Issue Number: close apache#47105 Related PR: apache#24932 Problem Summary: str_to_date always return microsecond part for datetime even if user does not specfic %f in date format string. This is wrong. mysql> select id,str_to_date(dt, '%Y-%m-%d %H:%i:%s') from test1 limit 1; +------+--------------------------------------+ | id | str_to_date(dt, '%Y-%m-%d %H:%i:%s') | +------+--------------------------------------+ | 2 | 2024-12-28 10:11:12.000000 | +------+--------------------------------------+ and constant fold scenario is wrong too: mysql> select cast(str_to_date('2025-01-17 11:59:30', '%Y-%m-%d %H:%i:%s') as string); +--------------------------------------------------------------------------+ | cast(str_to_date('2025-01-17 11:59:30', '%Y-%m-%d %H:%i:%s') as TEXT) | +--------------------------------------------------------------------------+ | 2025-01-17 11:59:30.000000 | +--------------------------------------------------------------------------+ - Test <!-- At least one of them must be included. --> - [x] Regression test - [ ] Unit Test - [ ] Manual test (add detailed scripts or steps below) - [ ] No need to test or manual test. Explain why: - [ ] This is a refactor/code format and no logic has been changed. - [ ] Previous test can cover this change. - [ ] No code files have been changed. - [ ] Other reason <!-- Add your reason? --> - Behavior changed: - [x] No. - [ ] Yes. <!-- Explain the behavior change --> - Does this need documentation? - [x] No. - [ ] Yes. <!-- Add document PR link here. eg: apache/doris-website#1214 --> - [ ] Confirm the release note - [ ] Confirm test cases - [ ] Confirm document - [ ] Add branch pick label <!-- Add branch pick label that this PR should merge into -->
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bp #47129
fix such issue both in legacy & nereids planner
Test
Behavior changed:
Does this need documentation?
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