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From "Serhii Harnyk (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (DRILL-4936) case expression when true then null, fails
Date Fri, 18 Nov 2016 15:04:58 GMT

     [ https://issues.apache.org/jira/browse/DRILL-4936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Serhii Harnyk reassigned DRILL-4936:
------------------------------------

    Assignee: Serhii Harnyk

> case expression when true then null, fails
> ------------------------------------------
>
>                 Key: DRILL-4936
>                 URL: https://issues.apache.org/jira/browse/DRILL-4936
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Flow
>    Affects Versions: 1.9.0
>            Reporter: Khurram Faraaz
>            Assignee: Serhii Harnyk
>
> Postgres compile and executes same query and returns null, whereas Drill returns error.
> Drill 1.9.0
> git commit id : 4edabe7a
> Drom Drill 1.9.0
> {noformat}
> 0: jdbc:drill:schema=dfs.tmp> select (case when true then null else null end) from
(values(1));
> Error: VALIDATION ERROR: From line 1, column 9 to line 1, column 46: ELSE clause or at
least one THEN clause must be non-NULL
> SQL Query null
> [Error Id: 2912d0b5-b947-4cd7-b325-83c809e5ae50 on centos-01.qa.lab:31010] (state=,code=0)
> {noformat}
> {noformat}
> 0: jdbc:drill:schema=dfs.tmp> select (case when true then null end) from (values(1));
> Error: VALIDATION ERROR: From line 1, column 9 to line 1, column 36: ELSE clause or at
least one THEN clause must be non-NULL
> SQL Query null
> [Error Id: cdb56929-b175-4474-b8a4-e6eec4d4a28f on centos-01.qa.lab:31010] (state=,code=0)
> {noformat}
> from Postgres 9.3
> {noformat}
> postgres=# select (case when true then null else null end) from (values(1)) foo;
>  case
> ------
> (1 row)
> {noformat}
> {noformat}
> postgres=# select (case when true then null end) from (values(1)) foo;
>  case
> ------
> (1 row)
> {noformat}  



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