csun5285 opened a new pull request, #64027:
URL: https://github.com/apache/doris/pull/64027
The subscript operator `s['field']` / `s[idx]` is parsed directly into an
ElementAt expression, while element_at only supports ARRAY and MAP. Unlike the
named call `element_at(s,'f')` (an UnboundFunction handled by
visitUnboundFunction, which applies ElementAt.rewriteWhenAnalyze() to turn a
struct element_at into struct_element), the bracket form goes through
visitElementAt and never got that rewrite. As a result element_at(struct) was
sent to the BE, which aborts on a DCHECK in ASAN builds (DORIS-26105) and
returns an INVALID_ARGUMENT error in release builds.
Apply the shared ElementAt.rewriteWhenAnalyze() in visitElementAt so both
the named and subscript syntaxes behave identically and route struct field
access to struct_element. No new function or BE change is involved.
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
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- [ ] Unit Test
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- [ ] 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:
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### Check List (For Reviewer who merge this PR)
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