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Posted to issues@flink.apache.org by "Kurt Young (JIRA)" <ji...@apache.org> on 2019/01/30 14:40:00 UTC
[jira] [Commented] (FLINK-6839) Improve SQL OVER alias When only
one OVER window agg in selection.
[ https://issues.apache.org/jira/browse/FLINK-6839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16756177#comment-16756177 ]
Kurt Young commented on FLINK-6839:
-----------------------------------
I'm closing this issue since it will be addressed after blink gets merged.
> Improve SQL OVER alias When only one OVER window agg in selection.
> ------------------------------------------------------------------
>
> Key: FLINK-6839
> URL: https://issues.apache.org/jira/browse/FLINK-6839
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: sunjincheng
> Priority: Major
>
> For OVER SQL:
> {code}
> SELECT a COUNT(c) OVER (ORDER BY proctime RANGE BETWEEN INTERVAL '10' SECOND PRECEDING AND CURRENT ROW) as cnt1 FROM MyTable
> {code}
> We expect plan {{DataStreamCalc(select=[a, w0$o0 AS cnt1])}} But we get {{DataStreamCalc(select=[a, w0$o0 AS $1])}}. this improve only for plan check. the functional is work well in nested queries，e.g.:
> {code}
> SELECT cnt1 from (SELECT a COUNT(c) OVER (ORDER BY proctime RANGE BETWEEN INTERVAL '10' SECOND PRECEDING AND CURRENT ROW) as cnt1 FROM MyTable)
> {code}
> The SQL above is work well. which mentioned in [FLINK-6760|https://issues.apache.org/jira/browse/FLINK-6760].
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