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https://issues.apache.org/jira/browse/BEAM-8456?focusedWorklogId=334295&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-334295
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ASF GitHub Bot logged work on BEAM-8456:
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                Author: ASF GitHub Bot
            Created on: 25/Oct/19 18:37
            Start Date: 25/Oct/19 18:37
    Worklog Time Spent: 10m 
      Work Description: kennknowles commented on issue #9849: [BEAM-8456] Add 
pipeline option to have Data Catalog truncate sub-millisecond precision
URL: https://github.com/apache/beam/pull/9849#issuecomment-546465466
 
 
   run sql postcommit
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 334295)
    Time Spent: 3h 10m  (was: 3h)

> BigQuery to Beam SQL timestamp has the wrong default: truncation makes the 
> most sense
> -------------------------------------------------------------------------------------
>
>                 Key: BEAM-8456
>                 URL: https://issues.apache.org/jira/browse/BEAM-8456
>             Project: Beam
>          Issue Type: Improvement
>          Components: dsl-sql
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
>            Priority: Major
>          Time Spent: 3h 10m
>  Remaining Estimate: 0h
>
> Most of the time, a user reading a timestamp from BigQuery with 
> higher-than-millisecond precision timestamps may not even realize that the 
> data source created these high precision timestamps. They are probably 
> timestamps on log entries generated by a system with higher precision.
> If they are using it with Beam SQL, which only supports millisecond 
> precision, it makes sense to "just work" by default.



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