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https://issues.apache.org/jira/browse/FLINK-8169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16309486#comment-16309486
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Timo Walther commented on FLINK-8169:
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I added FLINK-8353 where we can continue the discussion.
> Document timestamp and timezone behavior for Table API & SQL
> ------------------------------------------------------------
>
> Key: FLINK-8169
> URL: https://issues.apache.org/jira/browse/FLINK-8169
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Timo Walther
>
> {{java.sql.Date}}, {{java.sql.Time}}, and {{java.sql.Timestamp}} are timezone
> dependent. However, in Flink's Table & SQL API we remove this dependency and
> work with UTC timestamps internally. It should be documented how windows use
> the timestamps in different timezones for event-time. The behavior for
> processing-time should be explained as well. What is the result if I cast
> both timestamps to Long, String, or output them to a DataSet/DataStream?
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