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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (BEAM-5056) [SQL] Nullability of aggregation expressions isn't inferred properly
Date Thu, 02 Aug 2018 07:26:00 GMT

     [ https://issues.apache.org/jira/browse/BEAM-5056?focusedWorklogId=130167&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-130167
]

ASF GitHub Bot logged work on BEAM-5056:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 02/Aug/18 07:25
            Start Date: 02/Aug/18 07:25
    Worklog Time Spent: 10m 
      Work Description: kanterov commented on issue #6118: [BEAM-5056] [SQL] Fix nullability
in output schema
URL: https://github.com/apache/beam/pull/6118#issuecomment-409832379
 
 
   @akedin addressed CR comments and rebased on master, left commits unsquashed for easier
further review

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 130167)
    Time Spent: 2h 10m  (was: 2h)

> [SQL] Nullability of aggregation expressions isn't inferred properly
> --------------------------------------------------------------------
>
>                 Key: BEAM-5056
>                 URL: https://issues.apache.org/jira/browse/BEAM-5056
>             Project: Beam
>          Issue Type: Bug
>          Components: dsl-sql
>            Reporter: Gleb Kanterov
>            Assignee: Xu Mingmin
>            Priority: Major
>          Time Spent: 2h 10m
>  Remaining Estimate: 0h
>
> Given schema and rows:
> {code:java}
> Schema schema =
>     Schema.builder()
>         .addNullableField("f_int1", Schema.FieldType.INT32)
>         .addNullableField("f_int2", Schema.FieldType.INT32)
>         .build();
> List<Row> rows =
>     TestUtils.RowsBuilder.of(schema)
>         .addRows(null, null)
>         .getRows();
> {code}
> Following query fails:
> {code:sql}
> SELECT AVG(f_int1) FROM PCOLLECTION GROUP BY f_int2
> {code}
> {code:java}
> Caused by: java.lang.IllegalArgumentException: Field EXPR$0 is not nullable{code}
>  
>  



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