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https://issues.apache.org/jira/browse/BEAM-3610?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anton Kedin closed BEAM-3610.
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> [SQL] Fix HOP definition
> ------------------------
>
>                 Key: BEAM-3610
>                 URL: https://issues.apache.org/jira/browse/BEAM-3610
>             Project: Beam
>          Issue Type: Bug
>          Components: dsl-sql
>            Reporter: Anton Kedin
>            Assignee: Anton Kedin
>            Priority: Major
>             Fix For: Not applicable
>
>
> Current HOP implementation has parameters in wrong order, according to 
> Calcite doc. Sliding window size and frequency are swapped
>  
> According to [Calcite 
> docs|https://calcite.apache.org/docs/reference.html#grouped-window-functions] 
> the syntax is:
> {code:SQL}
> HOP(timestamp_field, frequency_interval, window_size)
> {code}
> We have 
> {code:SQL}
> HOP(timestamp_field, window_size, frequency_interval)
> {code}



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