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https://issues.apache.org/jira/browse/FLINK-6846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532615#comment-16532615
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ASF GitHub Bot commented on FLINK-6846:
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Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/6188
Hmm, I think there is still a case for `timestampAdd`. The problem are time
intervals with variable length such as `MONTH`, `QUARTER`, and `YEAR`. All of
these cannot be defined by milliseconds, because they depend on the context. So
`timstampAdd(ts, 1.month)` returns a different result than `ts + 1.month`.
> Add TIMESTAMPADD supported in TableAPI
> --------------------------------------
>
> Key: FLINK-6846
> URL: https://issues.apache.org/jira/browse/FLINK-6846
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: sunjincheng
> Assignee: sunjincheng
> Priority: Major
> Labels: pull-request-available, starter
>
> See FLINK-6811 for detail.
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