Weijun-H opened a new issue, #12253:
URL: https://github.com/apache/datafusion/issues/12253
### Is your feature request related to a problem or challenge?
Description | Finds the row with the minimum val. Calculates the arg
expression at that row. This function is affected by ordering.
-- | --
Example | min_by(A, B)
Alias(es) | argMin(arg, val), arg_min(arg, val)
### Describe the solution you'd like
```sql
D SELECT min_by(x, y) FROM VALUES ('a', 10), ('b', 50), ('c', 20) AS tab(x,
y);
┌──────────────┐
│ min_by(x, y) │
│ varchar │
├──────────────┤
│ a │
└──────────────┘
```
### Describe alternatives you've considered
_No response_
### Additional context
https://duckdb.org/docs/sql/functions/aggregates#min_byarg-val
https://docs.databricks.com/en/sql/language-manual/functions/min_by.html
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