Convert builtin Sum aggregate function to UDAF #10731
Description
Is your feature request related to a problem or challenge?
Used for tracking the remaining task for Sum #10651
- Introduce Sum UDAF #10651 Introduce Sum UDAF
- Remove builtin Sum aggregate function
- Remove the old sum expression API
- Convert name of Sum to lowercase
Describe the solution you'd like
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Describe alternatives you've considered
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Additional context
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