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https://issues.apache.org/jira/browse/ARROW-9836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jorge reassigned ARROW-9836:
----------------------------
Assignee: Jorge
> [Rust] [DataFusion] Improve API for usage of UDFs
> -------------------------------------------------
>
> Key: ARROW-9836
> URL: https://issues.apache.org/jira/browse/ARROW-9836
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust, Rust - DataFusion
> Reporter: Jorge
> Assignee: Jorge
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> TL;DR; currently, users call UDFs through
>
> {color:#000000}df.select(scalar_functions(“sqrt”, vec![col(“a”)],
> DataType::Float64)){color}
>
> Proposal:
>
> {color:#000000}let f = df.registry();{color}
> {color:#000000}df.select(f.udf(“sqrt”, vec![col(“a”)])?){color}
>
> so that they do not have to remember the UDFs return type when using it.
>
> This API will in the future allow to declare the UDF as part of the
> planning, like spark, instead of having to register it in the registry before
> using it (we just need to check if the UDF is registered or not before doing
> so).
> See complete proposal here:
> [https://docs.google.com/document/d/1Kzz642ScizeKXmVE1bBlbLvR663BKQaGqVIyy9cAscY/edit?usp=sharing]
>
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