feiniaofeiafei opened a new pull request, #64029:
URL: https://github.com/apache/doris/pull/64029
### What problem does this PR solve?
Issue Number: None
Related PR: #63853
Problem Summary:
FE constant folding for convert_tz() used Java LocalDateTime.atZone()
semantics. For source local times inside daylight-saving skipped intervals,
Java preserves the minute and second while shifting to the post-transition
offset, while BE executes convert_tz() through cctz::convert() and maps skipped
civil times to the transition instant.
This mismatch can make FE partition pruning reason about a different folded
value from BE execution. This PR makes FE convert_tz() constant folding use
ZoneRules transition information to match BE behavior for skipped and repeated
local times.
### Release note
None
### Check List (For Author)
- Test
- Unit Test: DateTimeExtractAndTransformTest (run by author)
- Behavior changed: No
- Does this need documentation: No
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