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https://issues.apache.org/jira/browse/ARROW-9751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17178230#comment-17178230
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Jorge commented on ARROW-9751:
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Most math functions accept float32 and float64, `length` will accept Utf8 and
lists soon, etc.
The goal of this story is to allow UDFs to accept more than one datatype.
Design: the accepted datatypes should be a vector ordered by "faster/smaller"
to "slower/larger" (cpu/memory). When the plan reaches a UDF, we try to cast
the input expression like before, type by type.
> [Rust] [DataFusion] Extend UDFs to accept more than one type per argument
> -------------------------------------------------------------------------
>
> Key: ARROW-9751
> URL: https://issues.apache.org/jira/browse/ARROW-9751
> Project: Apache Arrow
> Issue Type: New Feature
> Components: Rust, Rust - DataFusion
> Reporter: Jorge
> Assignee: Jorge
> Priority: Major
>
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