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https://issues.apache.org/jira/browse/FLINK-22998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17368043#comment-17368043
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Zhiwen Sun commented on FLINK-22998:
------------------------------------
FLINK-22770 has added SET support in Calcite parser.
Add unquoted key and values in SET seems not too difficult.
> Flink SQL does not support block comment before SET command
> -----------------------------------------------------------
>
> Key: FLINK-22998
> URL: https://issues.apache.org/jira/browse/FLINK-22998
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.14.0
> Reporter: Zhiwen Sun
> Priority: Major
>
> Flink SQL does not support block comment before SET command.
> A tiny SQL that produces the bug:
>
> {code:java}
> /**
> comment
> **/
> SET sql-client.execution.result-mode=TABLEAU;
> SELECT 'hello';{code}
>
> while following SQL works fine:
>
> {code:java}
> SET sql-client.execution.result-mode=TABLEAU;
> /**
> comment
> **/
> SELECT 'hello';{code}
>
>
> After I debug Flink source code, I found that EXTENDED_PARSER does not
> support block comment.
>
>
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