pub fn new_user_defined(
    return_type: &DataType,
    udf: &PbUserDefinedFunctionMetadata,
) -> Result<BoxedAggregateFunction>Expand description
Create a new user-defined aggregate function.
pub fn new_user_defined(
    return_type: &DataType,
    udf: &PbUserDefinedFunctionMetadata,
) -> Result<BoxedAggregateFunction>Create a new user-defined aggregate function.