kosiew commented on code in PR #23063:
URL: https://github.com/apache/datafusion/pull/23063#discussion_r3563665326
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datafusion/expr/src/expr.rs:
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@@ -930,21 +930,32 @@ pub struct ScalarFunction {
pub func: Arc<crate::ScalarUDF>,
/// List of expressions to feed to the functions as arguments
pub args: Vec<Expr>,
+ /// Original source code location, if known
+ pub spans: Spans,
Review Comment:
Could we avoid adding `spans` as a required public field on these expression
structs?
`ScalarFunction`, `AggregateFunction`, and `WindowFunction` are public and
can be constructed with struct literals. Adding a new required field means
existing downstream code using those literals will no longer compile. The
semver check reports `constructible_struct_adds_field` for all three structs.
Please keep the diagnostic span storage outside these public constructible
layouts, or use another semver-compatible design. The new required public
fields should be removed before merge.
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