alan910127 commented on code in PR #14737:
URL: https://github.com/apache/datafusion/pull/14737#discussion_r1962752150
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datafusion/expr-common/src/signature.rs:
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@@ -358,6 +358,8 @@ pub enum ArrayFunctionArgument {
/// An argument of type List/LargeList/FixedSizeList. All Array arguments
must be coercible
/// to the same type.
Array,
+ // An arbitrary data type.
+ DataType(DataType),
Review Comment:
that's fair, we probably don't need any other types
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