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https://issues.apache.org/jira/browse/FLINK-36543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17891817#comment-17891817
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Martijn Visser commented on FLINK-36543:
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[~dwysakowicz] Don't forget to close this one :)
> Table API over windows cannot be string serialized
> --------------------------------------------------
>
> Key: FLINK-36543
> URL: https://issues.apache.org/jira/browse/FLINK-36543
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.20.0
> Reporter: Dawid Wysakowicz
> Assignee: Dawid Wysakowicz
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0.0, 1.20.1
>
>
> {code}
> Table res = env.from("data")
> .window(Over.partitionBy($("k")).orderBy($("ts")).as("w"))
> .select($("k"), $("ts"), $("v").lastValue().over($("w")));
> {code}
> Query like above cannot be string serialized. It fails with:
> {code}
> Caused by: org.apache.flink.table.api.TableException: Literals with SYMBOL
> NOT NULL are not SQL serializable.
> {code}
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