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https://issues.apache.org/jira/browse/BEAM-2255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean-Baptiste Onofré resolved BEAM-2255.
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Resolution: Fixed
Fix Version/s: 2.1.0
> support ORDER BY clause
> -----------------------
>
> Key: BEAM-2255
> URL: https://issues.apache.org/jira/browse/BEAM-2255
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql
> Reporter: James Xu
> Assignee: James Xu
> Fix For: 2.1.0
>
>
> Currently Beam does not have `global sort` support[1]. So we will implement a
> limited version of `ORDER BY` using `org.apache.beam.sdk.transforms.Top` for
> now. So it will support sql like:
> {code:sql}
> select * from t order by id desc limit 10;
> {code}
> but not support `ORDER BY` without a `limit`:
> {code:sql}
> select * from t order by id desc
> {code}
> and also not support `ORDER BY` with a `offset`:
> {code:sql}
> select * from t order by id desc limit 10, 10;
> {code}
> [1].
> https://lists.apache.org/thread.html/bc0e65a3bb653b8fd0db96bcd4c9da5af71a71af5a5639a472167808@1464278191@%3Cdev.beam.apache.org%3E
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