viirya commented on code in PR #6778:
URL: https://github.com/apache/arrow-datafusion/pull/6778#discussion_r1244383282
##########
datafusion/expr/src/type_coercion/binary.rs:
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@@ -499,6 +492,7 @@ pub fn coercion_decimal_mathematics_type(
left_decimal_type: &DataType,
right_decimal_type: &DataType,
) -> Option<DataType> {
+ // TODO: Move this logic into kernel implementations
Review Comment:
Sounds good to me, if the coercion rule that actually comes from Spark is
considered to be general enough for all downstreams.
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