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https://issues.apache.org/jira/browse/FLINK-33491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17785468#comment-17785468
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ouyangwulin commented on FLINK-33491:
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This is my error, I didn't find the is json function.
> Support json column validated
> -----------------------------
>
> Key: FLINK-33491
> URL: https://issues.apache.org/jira/browse/FLINK-33491
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / Runtime
> Affects Versions: 1.19.0
> Reporter: ouyangwulin
> Assignee: ouyangwulin
> Priority: Minor
>
> Just like the {{is_valid_json}} function in PostgreSQL, it would be useful to
> have an inbuilt function to check whether a string conforms to the JSON
> specification.
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