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https://issues.apache.org/jira/browse/ARROW-9751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove resolved ARROW-9751.
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Fix Version/s: 2.0.0
Resolution: Fixed
Issue resolved by pull request 7967
[https://github.com/apache/arrow/pull/7967]
> [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
> Labels: pull-request-available
> Fix For: 2.0.0
>
> Time Spent: 10.5h
> Remaining Estimate: 0h
>
> 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, from "faster/smaller" to "slower/larger".
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