seddonm1 commented on a change in pull request #9565: URL: https://github.com/apache/arrow/pull/9565#discussion_r584420423
########## File path: rust/datafusion/src/physical_plan/type_coercion.rs ########## @@ -168,20 +168,35 @@ fn maybe_data_types( pub fn can_coerce_from(type_into: &DataType, type_from: &DataType) -> bool { use self::DataType::*; match type_into { - Int8 => matches!(type_from, Int8), - Int16 => matches!(type_from, Int8 | Int16 | UInt8), - Int32 => matches!(type_from, Int8 | Int16 | Int32 | UInt8 | UInt16), + Int8 => matches!(type_from, Int8 | Utf8 | LargeUtf8), Review comment: No problem @alamb. How about I revert the coercion logic from this PR and re-add the explicit cast in the tests. I think there is a _major_ piece of work to fully address CAST/coercion. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org