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https://issues.apache.org/jira/browse/BEAM-4547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16531662#comment-16531662
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Kenneth Knowles commented on BEAM-4547:
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I'm sure that either {{SUM}} or {{SUM0}} is incorrect, since we use the same
implementation for both... I'm not sure it matters for Beam, but we should get
testing for it all, including the edge cases. That can be separate.
> implement sum0 aggregation function
> -----------------------------------
>
> Key: BEAM-4547
> URL: https://issues.apache.org/jira/browse/BEAM-4547
> Project: Beam
> Issue Type: Sub-task
> Components: dsl-sql
> Reporter: Kai Jiang
> Assignee: Kenneth Knowles
> Priority: Major
> Fix For: 2.6.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
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