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https://issues.apache.org/jira/browse/DRILL-2379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sean Hsuan-Yi Chu resolved DRILL-2379.
--------------------------------------
Resolution: Fixed
Resolved in commit #: 0368adf0c
> UNION ALL with ORDER BY fails when column aliases don't match
> -------------------------------------------------------------
>
> Key: DRILL-2379
> URL: https://issues.apache.org/jira/browse/DRILL-2379
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 0.8.0
> Reporter: Abhishek Girish
> Assignee: Sean Hsuan-Yi Chu
> Attachments: drillbit.log
>
>
> The following query fails to execute:
> {code:sql}
> SELECT x
> FROM
> (SELECT Sum(ss_ext_sales_price) x
> FROM store_sales
> UNION ALL
> SELECT Sum(cs_ext_sales_price) y
> FROM catalog_sales) tmp
> ORDER BY x;
> SELECT x
> FROM
> (SELECT ss_ext_sales_price x
> FROM store_sales
> UNION ALL
> SELECT cs_ext_sales_price y
> FROM catalog_sales) tmp
> ORDER BY x;
> SELECT x
> FROM
> (SELECT ss_ext_sales_price x
> FROM store_sales
> UNION ALL
> SELECT ss_ext_sales_price y
> FROM store_sales) tmp
> ORDER BY x;
> Error from Drill:
> Query failed: RemoteRpcException: Failure while running fragment., Sort
> doesn't currently support sorts with changing schemas.
> java.lang.RuntimeException: java.sql.SQLException: Failure while executing
> query.
> ...
> {code}
> Log snippet attached.
> Changing the alias from 'y' to 'x' in the second sub-query will solve the
> issue.
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