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Posted to jira@arrow.apache.org by "Andrew Lamb (Jira)" <ji...@apache.org> on 2021/04/26 13:32:03 UTC
[jira] [Commented] (ARROW-11851) [Rust][DataFusion] Add coercion
support for `NULL` literals
[ https://issues.apache.org/jira/browse/ARROW-11851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332392#comment-17332392 ]
Andrew Lamb commented on ARROW-11851:
-------------------------------------
Migrated to github: https://github.com/apache/arrow-datafusion/issues/185
> [Rust][DataFusion] Add coercion support for `NULL` literals
> -----------------------------------------------------------
>
> Key: ARROW-11851
> URL: https://issues.apache.org/jira/browse/ARROW-11851
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust - DataFusion
> Reporter: Andrew Lamb
> Priority: Major
>
> As we observed in https://github.com/apache/arrow/pull/9565#discussion_r586347165 datafusion won't coerce null literals, forcing strange syntax such as:
> ```
> rpad('hi', CAST(NULL AS INT), 'xy')
> We should add automatic coercion logic from the null literal to any type and this expression should work just fine (produce a NULL output)
> ```
> rpad('hi', NULL, 'xy')
> ```
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