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https://issues.apache.org/jira/browse/FLINK-24271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17414725#comment-17414725
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liwei li commented on FLINK-24271:
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Hi [~lzljs3620320]
The documentation shows that JSON_VALUE support * ,so i originally wanted to
add an additional example with * in the document, but I found that the return
value of JSON_VALUE('[10, 20, [30, 40]]','$[2][*]') was NULL, is that correct?
> Add document for special char in JSON_VALUE
> -------------------------------------------
>
> Key: FLINK-24271
> URL: https://issues.apache.org/jira/browse/FLINK-24271
> Project: Flink
> Issue Type: Improvement
> Components: Documentation
> Reporter: Jingsong Lee
> Assignee: liwei li
> Priority: Minor
> Labels: starter
>
> If user has a json string:
> {"fields": {"system.process": [0.998]}}
> It is hard to write a valid json path to get 0.998.
> The correct json path should be '$.fields.[''system.process''][0]'
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