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https://issues.apache.org/jira/browse/FLINK-37924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18033570#comment-18033570
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Jinkun Liu edited comment on FLINK-37924 at 10/28/25 2:13 PM:
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Hi [~sxnan],
I was wondering if you have already started working on this task — I’ve looked
into some of the related code under this JIRA and found it very interesting.
I think I might be able to help with implementing the feature *“Introduce
Built-in Function {{VARIANT.at()}} to access a field or element in a Variant.”*
I’d really appreciate the opportunity to give it a try if possible.
Here’s my current idea:
* Extend {{org.apache.flink.table.functions.BuiltInFunctionDefinitions#AT}} to
include logic for the {{VARIANT}} type.
* In
{{{}org.apache.flink.table.planner.codegen.ExprCodeGenerator#generateCallExpression{}}},
make the {{case: ITEM}} support the {{VARIANT}} type and implement the
corresponding logic.
If I’ve misunderstood anything or made any incorrect assumptions, please feel
free to point them out — I’d really appreciate your feedback and guidance.
Best regards,
Jinkun
was (Author: JIRAUSER308530):
Hi [~sxnan],
I was wondering if you have already started working on this task — I’ve looked
into some of the related code under this JIRA and found it very interesting.
I believe I’m capable of implementing the feature *“Introduce Built-in Function
{{VARIANT.at()}} to access a field or element in a Variant.”* I’d really
appreciate the opportunity to give it a try if possible.
Here’s my current idea:
* Extend {{org.apache.flink.table.functions.BuiltInFunctionDefinitions#AT}} to
include logic for the {{VARIANT}} type.
* In
{{{}org.apache.flink.table.planner.codegen.ExprCodeGenerator#generateCallExpression{}}},
make the {{case: ITEM}} support the {{VARIANT}} type and implement the
corresponding logic.
If I’ve misunderstood anything or made any incorrect assumptions, please feel
free to point them out — I’d really appreciate your feedback and guidance.
Best regards,
Jinkun
> Support variant field accessing
> -------------------------------
>
> Key: FLINK-37924
> URL: https://issues.apache.org/jira/browse/FLINK-37924
> Project: Flink
> Issue Type: Sub-task
> Reporter: Xuannan Su
> Assignee: Xuannan Su
> Priority: Major
>
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