[jira] [Assigned] (SPARK-33915) Allow json expression to be pushable column

["Apache Spark (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-33915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-33915:
------------------------------------

    Assignee: Apache Spark

> Allow json expression to be pushable column
> -------------------------------------------
>
>                 Key: SPARK-33915
>                 URL: https://issues.apache.org/jira/browse/SPARK-33915
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 3.0.1
>            Reporter: Ted Yu
>            Assignee: Apache Spark
>            Priority: Major
>
> Currently PushableColumnBase provides no support for json / jsonb expression.
> Example of json expression:
> {code}
> get_json_object(phone, '$.code') = '1200'
> {code}
> If non-string literal is part of the expression, the presence of cast() would complicate the situation.
> Implication is that implementation of SupportsPushDownFilters doesn't have a chance to perform pushdown even if third party DB engine supports json expression pushdown.
> This issue is for discussion and implementation of Spark core changes which would allow json expression to be recognized as pushable column.



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