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https://issues.apache.org/jira/browse/CALCITE-5733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17727469#comment-17727469
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Xin Chen commented on CALCITE-5733:
-----------------------------------
I am currently not sure how to return a comparison instance for 'CAST
(ARRAY...' here yet.
!screenshot-3.png!
> simplify should also simplify for array type
> --------------------------------------------
>
> Key: CALCITE-5733
> URL: https://issues.apache.org/jira/browse/CALCITE-5733
> Project: Calcite
> Issue Type: Bug
> Affects Versions: 1.26.0, 1.34.0
> Reporter: Xin Chen
> Priority: Major
> Attachments: screenshot-1.png, screenshot-2.png, screenshot-3.png
>
>
> Simplification seem to not take into account that the specified field is of
> array type. In other words，it can simplify "a = 1 AND a = 2" to "false"，but
> can not simplify “a = [1,2] AND a = [2,3]” to "false". Obviously, was there
> no consideration given to the field type being an array？I found this issue
> while debugging the Flink SQL task.
> Link to
> https://issues.apache.org/jira/browse/FLINK-32188.
> https://issues.apache.org/jira/browse/CALCITE-4364
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