[jira] [Created] (SPARK-42360) Transform LeftOuter join with IsNull filter on right side to Anti join

["Wan Kun (Jira)" <ji...@apache.org>]

Wan Kun created SPARK-42360:
-------------------------------

             Summary: Transform LeftOuter join with IsNull filter on right side to Anti join
                 Key: SPARK-42360
                 URL: https://issues.apache.org/jira/browse/SPARK-42360
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.3.1
            Reporter: Wan Kun


Optimize left outer join to anti join if exists IsNull filter on the right side.
For example,  query
{code:sql}
SELECT t1.*
FROM t1 LEFT JOIN t2
ON t1.id = t2.id
WHERE t2.id is null and t1.id = 1 and Rand() < 0.5
{code}
can be optimized to 
{code:sql}
SELECT t1.*
FROM t1 LEFT ANTI JOIN t2
ON t1.id = t2.id
WHERE t1.id = 1 and Rand() < 0.5
{code}




--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org