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Posted to issues@drill.apache.org by "Arina Ielchiieva (Jira)" <ji...@apache.org> on 2019/11/04 12:50:00 UTC
[jira] [Updated] (DRILL-6799) Enhance the Hash-Join Operator to
perform Anti-Semi-Join
[ https://issues.apache.org/jira/browse/DRILL-6799?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arina Ielchiieva updated DRILL-6799:
------------------------------------
Fix Version/s: (was: 1.17.0)
> Enhance the Hash-Join Operator to perform Anti-Semi-Join
> --------------------------------------------------------
>
> Key: DRILL-6799
> URL: https://issues.apache.org/jira/browse/DRILL-6799
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Relational Operators, Query Planning & Optimization
> Affects Versions: 1.14.0
> Reporter: Boaz Ben-Zvi
> Assignee: Boaz Ben-Zvi
> Priority: Minor
>
> Similar to handling Semi-Join (see DRILL-6735), the Anti-Semi-Join can be enhanced by eliminating the extra DISTINCT (i.e. Hash-Aggr) operator.
> Example (note the NOT IN):
> select c.c_first_name, c.c_last_name from dfs.`/data/json/s1/customer` c where c.c_customer_sk NOT IN (select s.ss_customer_sk from dfs.`/data/json/s1/store_sales` s) limit 4;
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