924060929 opened a new pull request, #10761:
URL: https://github.com/apache/doris/pull/10761
# Proposed changes
Issue Number: no issue
## Problem Summary:
in the past, we use generic type for plan and expression to support pattern
match framework, it can support type inference without unsafely type cast.
then, we observed that expression usually traverse or rewrite by visitor
pattern, so generic type is useless for expression and introduces complexity.
so we remove generic type from concrete expressions.
## Checklist(Required)
1. Does it affect the original behavior: No
2. Has unit tests been added: No Need
3. Has document been added or modified: No Need
4. Does it need to update dependencies: No
5. Are there any changes that cannot be rolled back: No
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