pub fn udaf_default_return_field<F: AggregateUDFImpl + ?Sized>(
func: &F,
arg_fields: &[FieldRef],
) -> Result<FieldRef>Expand description
Encapsulates default implementation of AggregateUDFImpl::return_field.
pub fn udaf_default_return_field<F: AggregateUDFImpl + ?Sized>(
func: &F,
arg_fields: &[FieldRef],
) -> Result<FieldRef>Encapsulates default implementation of AggregateUDFImpl::return_field.