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Posted to issues@drill.apache.org by "Sean Hsuan-Yi Chu (JIRA)" <ji...@apache.org> on 2015/01/29 23:38:35 UTC
[jira] [Reopened] (DRILL-1986) Natural join query returns wrong
result
[ https://issues.apache.org/jira/browse/DRILL-1986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Hsuan-Yi Chu reopened DRILL-1986:
--------------------------------------
> Natural join query returns wrong result
> ---------------------------------------
>
> Key: DRILL-1986
> URL: https://issues.apache.org/jira/browse/DRILL-1986
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 0.8.0
> Reporter: Victoria Markman
> Assignee: Sean Hsuan-Yi Chu
>
> Natural join returns wrong result:
> {code}
> 0: jdbc:drill:schema=dfs> select * from `t1.json`;
> +------------+------------+------------+
> | a1 | b1 | c1 |
> +------------+------------+------------+
> | 1 | 1 | 2015-01-01 |
> | 2 | 2 | 2015-01-02 |
> +------------+------------+------------+
> 2 rows selected (0.087 seconds)
> 0: jdbc:drill:schema=dfs> select * from `t2.json`;
> +------------+------------+------------+
> | a1 | b1 | c1 |
> +------------+------------+------------+
> | 1 | 1 | 2015-01-01 |
> +------------+------------+------------+
> 1 row selected (0.112 seconds)
> 0: jdbc:drill:schema=dfs> select * from `t1.json` natural join `t2.json`;
> +------------+------------+------------+------------+------------+------------+
> | a1 | b1 | c1 | a10 | b10 | c10 |
> +------------+------------+------------+------------+------------+------------+
> +------------+------------+------------+------------+------------+------------+
> No rows selected (0.223 seconds)
> {code}
> Equivalent inner join query returns one row:
> {code}
> 0: jdbc:drill:schema=dfs> select * from `t1.json` t1, `t2.json` t2 where t1.a1=t2.a1 and t1.b1=t2.b1 and t1.c1=t2.c1;
> +------------+------------+------------+------------+------------+------------+
> | a1 | b1 | c1 | a10 | b10 | c10 |
> +------------+------------+------------+------------+------------+------------+
> | 1 | 1 | 2015-01-01 | 1 | 1 | 2015-01-01 |
> +------------+------------+------------+------------+------------+------------+
> 1 row selected (0.732 seconds)
> {code}
> Natural join is listed as supported in our documentation.
> If we decide not to support it, we need to make sure to remove it from docs as well.
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