jacktengg opened a new pull request, #59399:
URL: https://github.com/apache/doris/pull/59399

   https://github.com/apache/doris-website/pull/2962
   
   TIMESTAMPTZ implementation does not store time zone information with each 
row of data, but instead adopts the following mechanism:
   1. During storage: All input time values are converted to UTC (Coordinated 
Universal Time)
   2. During query: Based on the session's time zone setting (specified via the 
`time_zone` variable), UTC time is automatically converted to the corresponding 
time zone for display
   
   Therefore, TIMESTAMPTZ can be understood as a DATETIME type with time zone 
conversion functionality, where Doris automatically handles time zone 
conversions internally.
   
   None
   
   - Test <!-- At least one of them must be included. -->
       - [x] Regression test
       - [x] 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?
       - [ ] No.
   - [x] Yes. <!-- Add document PR link here. eg: 
https://github.com/apache/doris-website/pull/1214 -->
   
   - [ ] Confirm the release note
   - [ ] Confirm test cases
   - [ ] Confirm document
   - [ ] Add branch pick label <!-- Add branch pick label that this PR should 
merge into -->
   
   ---------
   
   ### What problem does this PR solve?
   
   Issue Number: close #xxx
   
   Related PR: #xxx
   
   Problem Summary:
   
   ### Release note
   
   None
   
   ### Check List (For Author)
   
   - Test <!-- At least one of them must be included. -->
       - [ ] 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:
       - [ ] No.
       - [ ] Yes. <!-- Explain the behavior change -->
   
   - Does this need documentation?
       - [ ] No.
       - [ ] Yes. <!-- Add document PR link here. eg: 
https://github.com/apache/doris-website/pull/1214 -->
   
   ### Check List (For Reviewer who merge this PR)
   
   - [ ] 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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