jcsherin commented on code in PR #12374:
URL: https://github.com/apache/datafusion/pull/12374#discussion_r1748092364
##########
datafusion/expr/src/expr_schema.rs:
##########
@@ -352,7 +358,18 @@ impl ExprSchemable for Expr {
}
}
WindowFunctionDefinition::AggregateUDF(func) =>
Ok(func.is_nullable()),
- WindowFunctionDefinition::WindowUDF(udwf) =>
Ok(udwf.nullable()),
+ WindowFunctionDefinition::WindowUDF(udwf) => {
+ let data_types = args
+ .iter()
+ .map(|e| e.get_type(input_schema))
+ .collect::<Result<Vec<_>>>()?;
+ let input_types = data_types_with_window_udf(&data_types,
udwf)?;
Review Comment:
Note: I copied the call to type-coercion performed for window function
arguments from `Expr::get_type` (above).
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