morrySnow opened a new pull request, #68069:
URL: https://github.com/apache/doris/pull/68069
### What problem does this PR solve?
Related PR: #67787
Problem Summary:
Backport the user-variable SQL cache dependency fix to branch-4.1. User
variables are now recorded while binding `UnboundVariable`, before function
binding unwraps them to their real expressions. This prevents expressions such
as `ABS(@v)` from reusing a stale cached result after the variable changes.
The obsolete late `VariableToLiteral` / `ReplaceVariableByLiteral` path is
removed, and the generated-column variable check is performed on the parsed
expression so variables nested inside functions remain rejected. The unit test
is adapted to the Java `Optional` API used by branch-4.1.
### Release note
None
### Check List (For Author)
- Test
- [x] Unit Test
- [x] Regression test coverage included
- Behavior changed:
- [x] No.
- Does this need documentation?
- [x] No.
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label
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