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https://issues.apache.org/jira/browse/FLINK-4359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15416179#comment-15416179
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ASF GitHub Bot commented on FLINK-4359:
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Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/2348
The first line is Scala Table API, second line is Java Table API and the
string with the INTERVAL prefix is standard SQL. So we cannot change the
standard ;)
Yes, I think that is the reason. Calcite does it like that and Oracle too.
https://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements003.htm#i38598
> Add INTERVAL type
> -----------------
>
> Key: FLINK-4359
> URL: https://issues.apache.org/jira/browse/FLINK-4359
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> In order to start with StreamSQL windows we need a way to define intervals in
> time.
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