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Posted to issues@spark.apache.org by "Johnny Bai (Jira)" <ji...@apache.org> on 2020/09/08 10:09:00 UTC

[jira] [Created] (SPARK-32821) cannot group by with window in sql sentence for structured streaming with watermark

Johnny Bai created SPARK-32821:
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             Summary: cannot group by with window in sql sentence for structured streaming with watermark
                 Key: SPARK-32821
                 URL: https://issues.apache.org/jira/browse/SPARK-32821
             Project: Spark
          Issue Type: Improvement
          Components: Structured Streaming
    Affects Versions: 3.0.0
            Reporter: Johnny Bai
             Fix For: 3.0.1


 

{{import spark.implicits._}}

{{val words = ... // streaming DataFrame of schema \{ timestamp: Timestamp, word: String }}}

{{// Group the data by window and word and compute the count of each group}}

{{val windowedCounts = words.groupBy(window($"timestamp", "10 minutes", "5 minutes"),$"word").count()}}

{{}}

{{but not support group by with window in sql style as below:}}

{{"select ts_field,count(*) over window(ts_field, '1 minute', '1 minute') with watermark 1 minute from tableX group by ts_field"}}

{{}}



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