jacktengg opened a new pull request, #66333:
URL: https://github.com/apache/doris/pull/66333
Issue Number: None
Related PR: None
Problem Summary:
This is part 1 of the feature of supporting nanoseconds of datetimev2 type.
DATETIMEV2 was limited to six fractional digits and used the packed
civil-time representation. Add the signed Int64 epoch-nanosecond representation
for scales 7 through 9, integrate it with FE literals and type metadata, and
support basic table models, partition and bucket keys, insert and stream-load
input, string conversion, MySQL result serialization, predicates, hashing,
grouping, joins, and ordering.
Support DATETIMEV2(7), DATETIMEV2(8), and DATETIMEV2(9) in core storage and
basic SQL execution paths.
Complete features will be implemented in following PRs.
- Behavior changed: Yes, DATETIMEV2 accepts scales 7 through 9 in core SQL
and storage paths
- Does this need documentation: Yes, DATETIMEV2 precision and range
documentation should be updated
### 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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