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Posted to issues@drill.apache.org by "Victoria Markman (JIRA)" <ji...@apache.org> on 2015/06/13 01:53:00 UTC
[jira] [Updated] (DRILL-1169) Add support for UNION (distinct type)
[ https://issues.apache.org/jira/browse/DRILL-1169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Victoria Markman updated DRILL-1169:
------------------------------------
Labels: doc-impacting (was: )
> Add support for UNION (distinct type)
> -------------------------------------
>
> Key: DRILL-1169
> URL: https://issues.apache.org/jira/browse/DRILL-1169
> Project: Apache Drill
> Issue Type: New Feature
> Components: Query Planning & Optimization
> Environment: Running Drill on MacOSX standalone.
> #Sun Jul 20 20:12:53 PDT 2014
> git.commit.id.abbrev=e5c2da0
> Reporter: Bob Rumsby
> Assignee: Sean Hsuan-Yi Chu
> Labels: doc-impacting
> Fix For: Future
>
>
> A query that selects a compatible column from the same JSON file on either side of the UNION operator fails. The same query works if UNION ALL is used.
> Example of Failure:
> 0: jdbc:drill:zk=local> select id from dfs.`/Users/brumsby/drill/donuts.json` union select id from dfs.`/Users/brumsby/drill/donuts.json`;
> Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while running query.[error_id: "dfe76b6b-7eb0-49ee-8084-1e29ea995be0"
> endpoint {
> address: "10.250.0.28"
> user_port: 31010
> control_port: 31011
> data_port: 31012
> }
> error_type: 0
> message: "Failure while parsing sql. < CannotPlanException:[ Node [rel#880:Subset#6.PHYSICAL.SINGLETON([]).[]] could not be implemented; planner state:
> ...
> Same query with UNION ALL (which works):
> 0: jdbc:drill:zk=local> select id from dfs.`/Users/brumsby/drill/donuts.json` union all select id from dfs.`/Users/brumsby/drill/donuts.json`;
> +------------+
> | id |
> +------------+
> | 0001 |
> | 0001 |
> +------------+
> 2 rows selected (0.111 seconds)
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