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Posted to dev@flink.apache.org by "sunjincheng (JIRA)" <ji...@apache.org> on 2017/12/28 08:34:00 UTC

[jira] [Created] (FLINK-8325) Add support for constant parameters in GROUP WINDOW aggregate

sunjincheng created FLINK-8325:
----------------------------------

             Summary: Add support for constant parameters in GROUP WINDOW aggregate
                 Key: FLINK-8325
                 URL: https://issues.apache.org/jira/browse/FLINK-8325
             Project: Flink
          Issue Type: Bug
          Components: Table API & SQL
    Affects Versions: 1.5.0
            Reporter: sunjincheng
            Assignee: sunjincheng


COUNT(1) with Group Window, always output 0. 
e.g.
DATA:
{code}
val data = List(
    (1L, 1, "Hi"),
    (2L, 2, "Hello"),
    (4L, 2, "Hello"),
    (8L, 3, "Hello world"),
    (16L, 3, "Hello world"))
{code}

SQL:
{code}
SELECT b, COUNT(1) FROM MyTable GROUP BY Hop(proctime, interval '0.001' SECOND, interval '0.002' SECOND),b
{code}

OUTPUT:
{code}
1,0,1, 
1,0,1, 
2,0,1,
2,0,1, 
2,0,2, 
3,0,1,
3,0,1
{code}



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