[teiid-issues] [JBoss JIRA] (TEIID-1862) add regression test for nested selects using UNION ALL and multiple aliases of the same column.

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-1862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins closed TEIID-1862.
---------------------------------


    
> add regression test for nested selects using UNION ALL and multiple aliases of the same column.
> -----------------------------------------------------------------------------------------------
>
>                 Key: TEIID-1862
>                 URL: https://issues.jboss.org/browse/TEIID-1862
>             Project: Teiid
>          Issue Type: Task
>          Components: Query Engine
>    Affects Versions: 7.7
>         Environment: Teiid 7.6.x
>            Reporter: Johnathon Lee
>            Assignee: Johnathon Lee
>            Priority: Optional
>             Fix For: 7.7
>
>         Attachments: teiid-1862_7.6.x.patch
>
>
> Pre 7.x code would throw a NPE with a query similar to [1].  Adding JUnit to prevent regression
> [1]
> SELECT enterprise_id FROM (
>                 SELECT * FROM (
>                     SELECT id, id AS display_id, 103 AS enterprise_id FROM (
>                         SELECT 'x' as id) AS nexted103) as table103Source 
>                 UNION ALL 
>                 SELECT  'x', 'x' AS display_id, 101 AS enterprise_id FROM (
>                     SELECT 'x') AS nested101 
>                 UNION ALL 
>                 SELECT  'x', 'x' AS display_id, 100 AS enterprise_id FROM (
>                     SELECT 'x') AS nested100) as tableFrom1stSelect
> WHERE enterprise_id = 100

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.jboss.org/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira