timsaucer commented on code in PR #16053:
URL: https://github.com/apache/datafusion/pull/16053#discussion_r2105076604
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datafusion/physical-expr/src/expressions/literal.rs:
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@@ -34,15 +36,37 @@ use datafusion_expr_common::interval_arithmetic::Interval;
use datafusion_expr_common::sort_properties::{ExprProperties, SortProperties};
/// Represents a literal value
-#[derive(Debug, PartialEq, Eq, Hash)]
+#[derive(Debug, PartialEq, Eq)]
pub struct Literal {
value: ScalarValue,
+ metadata: Option<HashMap<String, String>>,
Review Comment:
I have a slightly deeper cut in this PR:
https://github.com/apache/datafusion/pull/16170
In addition to the work in the current PR, that above one adds the metadata
directly to the `Literal` variant of the logical plan rather than only the
physical plan. I think that one is a better version long term, but it is more
of a breaking change. If we're doing these other breaking changes for metadata
in user defined functions in DF48, then maybe we can add it in as well.
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