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https://issues.apache.org/jira/browse/FLINK-35687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17859674#comment-17859674
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david radley commented on FLINK-35687:
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[~dwysakowicz] Thanks for clarifying.
* are you saying that this is not an issue before the RETURNING keyword. I had
thought that the default would be a return a string. Does this string have the
_=_ s in , the response in the example looks like a String (i.e. what would
have been returned before the RETURNING keyword was added) .
* the example given has ARRAY<STRING>. Shouldn't this return an array of
Strings in this case and not a JSON Object?
* If this behaviour is new at 1.19 then I agree that correcting in 1.19.1 is
not an issue. If this has been around since 1.15, there could be more of a
migration impact.
WDYT?
> JSON_QUERY should return a proper JSON for ARRAY<STRING>
> --------------------------------------------------------
>
> Key: FLINK-35687
> URL: https://issues.apache.org/jira/browse/FLINK-35687
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.19.1
> Reporter: Dawid Wysakowicz
> Assignee: Dawid Wysakowicz
> Priority: Major
> Fix For: 1.20.0
>
>
> {code}
> SELECT JSON_QUERY('{"items": [{"itemId":1234, "count":10}]}', '$.items'
> RETURNING ARRAY<STRING>)
> {code}
> returns
> {code}
> {itemId=1234, count=10}
> {code}
> but it should:
> {code}
> {"itemId":1234, "count":10}
> {code}
> We should call jsonize for Collection types here:
> https://github.com/apache/flink/blob/f6f88135b3a5fa5616fe905346e5ab6dce084555/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/SqlJsonUtils.java#L268
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