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https://issues.apache.org/jira/browse/CALCITE-5733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17730540#comment-17730540
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xiong duan commented on CALCITE-5733:
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[~xinchen147] Hi, Do you think we change the summary to "Simplify 'a=
ARRAY[1,2] AND a = ARRAY[2,3]' to false" is better？
> simplify should also simplify for array type
> --------------------------------------------
>
> Key: CALCITE-5733
> URL: https://issues.apache.org/jira/browse/CALCITE-5733
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.26.0, 1.34.0
> Reporter: Xin Chen
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2023-06-06-16-24-50-989.png, screenshot-1.png,
> screenshot-2.png, screenshot-3.png, screenshot-4.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 = ARRAY[1,2] AND a = ARRAY[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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