jonahgao commented on code in PR #7904:
URL: https://github.com/apache/arrow-datafusion/pull/7904#discussion_r1368046407
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datafusion/physical-expr/src/math_expressions.rs:
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@@ -701,6 +701,29 @@ macro_rules! make_try_abs_function {
}};
}
+// Decimal types should keep the same precision and scale by using
`with_data_type()`.
+// https://github.com/apache/arrow-rs/issues/4644
+macro_rules! make_decimal_abs_function {
+ ($ARRAY_TYPE:ident) => {{
+ |args: &[ArrayRef]| {
+ let array = downcast_arg!(&args[0], "abs arg", $ARRAY_TYPE);
+ let res: $ARRAY_TYPE = array
+ .try_unary(|x| {
+ // Valid Decimal values should never overflow
+ x.checked_abs().ok_or_else(|| {
Review Comment:
@viirya The `abs` function only panics on `MIN`, which is not a valid
decimal number unless there is a bug somewhere.
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