alamb commented on code in PR #5342:
URL: https://github.com/apache/arrow-datafusion/pull/5342#discussion_r1119286791
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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?
Yes.
I guess I was thinking of the more general case for arithmetic where
`i32::MAX + i16::MAX` requires a `i64` to store
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