[jira] [Resolved] (ARROW-9751) [Rust] [DataFusion] Extend UDFs to accept more than one type per argument

["Andy Grove (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-9751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Grove resolved ARROW-9751.
-------------------------------
    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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