houqp commented on a change in pull request #68:
URL: https://github.com/apache/arrow-datafusion/pull/68#discussion_r706565176
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File path: datafusion/src/scalar.rs
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@@ -64,7 +70,10 @@ pub enum ScalarValue {
/// large binary
LargeBinary(Option<Vec<u8>>),
/// list of nested ScalarValue
- List(Option<Vec<ScalarValue>>, DataType),
+ // 1st argument are the inner values (e.g. Int64Array)
+ // 2st argument is the Lists' datatype (i.e. it includes `Field`)
+ // to downcast inner values, use ListArray::<i32>::get_child()
+ List(Option<Arc<dyn Array>>, DataType),
Review comment:
@jorgecarleitao do you remember what's reason for changing from vector
of ScalarValue to Arrow array here? Is it for static typing of the individual
list values?
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