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https://issues.apache.org/jira/browse/FLINK-22315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17429247#comment-17429247
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Yuepeng Pan commented on FLINK-22315:
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'alter table add constraint' syntax is availiable
[here|https://github.com/apache/flink/blob/fe59485be2ae2b576cbd252e78cc6f0d36ce090b/flink-table/flink-sql-parser/src/main/codegen/includes/parserImpls.ftl#L534]
.
So, we just support extra 'ADD column / watermark' for ALTER TABLE statement,
IMO.
> Support ADD column/constraint/watermark for ALTER TABLE statement
> -----------------------------------------------------------------
>
> Key: FLINK-22315
> URL: https://issues.apache.org/jira/browse/FLINK-22315
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: Jark Wu
> Assignee: Yuepeng Pan
> Priority: Major
>
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