Boaz Ben-Zvi created DRILL-6799:
-----------------------------------
Summary: 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
Fix For: 1.16.0
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;
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
