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https://issues.apache.org/jira/browse/FLINK-5654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926498#comment-15926498
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ASF GitHub Bot commented on FLINK-5654:
---------------------------------------
GitHub user rtudoran opened a pull request:
https://github.com/apache/flink/pull/3550
[FLINK-5654] - Add processing time OVER RANGE BETWEEN x PRECEDING
aggregation to SQL
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/huawei-flink/flink FLINK-5654re
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3550.patch
To close this pull request, make a commit to your master/trunk branch
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This closes #3550
----
commit b5eb64dc6f6b1036a3f6017ba1941f45347f2b67
Author: rtudoran <[email protected]>
Date: 2017-03-15T12:58:20Z
intermediate state
commit ba1d7f91715e16b562177935db574f4ab8efb87c
Author: rtudoran <[email protected]>
Date: 2017-03-15T13:08:27Z
Merge branch 'master' of https://github.com/apache/flink into
FLINK-5654re
# Conflicts:
#
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/datastream/DataStreamOverAggregate.scala
commit c1b806486a80a87052cda9629454bee0c12239de
Author: rtudoran <[email protected]>
Date: 2017-03-15T16:23:29Z
Implementation in Scala for JIRA issue 5654 (aggregates over time
bounded windows working on processing time)
----
> Add processing time OVER RANGE BETWEEN x PRECEDING aggregation to SQL
> ---------------------------------------------------------------------
>
> Key: FLINK-5654
> URL: https://issues.apache.org/jira/browse/FLINK-5654
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Fabian Hueske
> Assignee: radu
>
> The goal of this issue is to add support for OVER RANGE aggregations on
> processing time streams to the SQL interface.
> Queries similar to the following should be supported:
> {code}
> SELECT
> a,
> SUM(b) OVER (PARTITION BY c ORDER BY procTime() RANGE BETWEEN INTERVAL '1'
> HOUR PRECEDING AND CURRENT ROW) AS sumB,
> MIN(b) OVER (PARTITION BY c ORDER BY procTime() RANGE BETWEEN INTERVAL '1'
> HOUR PRECEDING AND CURRENT ROW) AS minB
> FROM myStream
> {code}
> The following restrictions should initially apply:
> - All OVER clauses in the same SELECT clause must be exactly the same.
> - The PARTITION BY clause is optional (no partitioning results in single
> threaded execution).
> - The ORDER BY clause may only have procTime() as parameter. procTime() is a
> parameterless scalar function that just indicates processing time mode.
> - UNBOUNDED PRECEDING is not supported (see FLINK-5657)
> - FOLLOWING is not supported.
> The restrictions will be resolved in follow up issues. If we find that some
> of the restrictions are trivial to address, we can add the functionality in
> this issue as well.
> This issue includes:
> - Design of the DataStream operator to compute OVER ROW aggregates
> - Translation from Calcite's RelNode representation (LogicalProject with
> RexOver expression).
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