ozankabak commented on code in PR #5342:
URL: https://github.com/apache/arrow-datafusion/pull/5342#discussion_r1118160922
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datafusion/expr/src/type_coercion/binary.rs:
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@@ -238,13 +238,32 @@ fn comparison_binary_numeric_coercion(
(_, Decimal128(_, _)) => get_comparison_common_decimal_type(rhs_type,
lhs_type),
(Float64, _) | (_, Float64) => Some(Float64),
(_, Float32) | (Float32, _) => Some(Float32),
- (Int64, _) | (_, Int64) => Some(Int64),
- (Int32, _) | (_, Int32) => Some(Int32),
- (Int16, _) | (_, Int16) => Some(Int16),
- (Int8, _) | (_, Int8) => Some(Int8),
+ // start checking from Int64, that is the most inclusive integer type
Review Comment:
Wouldn't that map (`Int32`, `Int16`) to `Int64`? I think @berkaysynnada's
intent is to map to the narrowest correct type, which in this case would be
`Int32`.
I am not sure if the `match` pattern is the most succinct representation of
the table in the PR text though.
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