csun5285 opened a new pull request, #65396:
URL: https://github.com/apache/doris/pull/65396
1. VMergeIteratorContext::block_reset built per-segment merge blocks from
the storage Schema (full type). A topn ordered read over a rowset with multiple
OVERLAPPING segments then decoded pruned children into the wrong dst columns
2. BlockReader::_init_agg_state built the reader_replace argument type from
the raw TabletColumn (full type) while the stored block uses the pruned type.
On AGG tables any pruned read that goes through the aggregate merge path (>= 2
data rowsets, no special session vars needed) failed with "Aggregate function
reader_replace argument 0 type check failed: ColumnStruct has 2 elements, but
DataTypeStruct has 3 elements".
### 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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- [ ] No need to test or manual test. Explain why:
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- [ ] 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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