[jira] [Commented] (SPARK-37292) Removes outer join if it only has DISTINCT on streamed side with alias

2021-11-12 Thread Apache Spark (Jira) 


[ 
https://issues.apache.org/jira/browse/SPARK-37292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17442820#comment-17442820
 ] 

Apache Spark commented on SPARK-37292:
--

User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/34573

> Removes outer join if it only has DISTINCT on streamed side with alias
> --
>
> Key: SPARK-37292
> URL: https://issues.apache.org/jira/browse/SPARK-37292
> Project: Spark
>  Issue Type: Improvement
>  Components: SQL
>Affects Versions: 3.3.0
>Reporter: Yuming Wang
>Assignee: Yuming Wang
>Priority: Major
> Fix For: 3.3.0
>
>
> {code:scala}
> spark.range(200L).selectExpr("id AS a").createTempView("t1")
> spark.range(300L).selectExpr("id AS b").createTempView("t2")
> spark.sql("SELECT DISTINCT a AS newAlias FROM t1 LEFT JOIN t2 ON a = 
> b").explain(true)
> {code}
> Expected optimized plan:
> {noformat}
> == Optimized Logical Plan ==
> Aggregate [newAlias#8L], [newAlias#8L]
> +- Project [id#0L AS newAlias#8L]
>+- Range (0, 200, step=1, splits=Some(2))
> {noformat}



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[jira] [Commented] (SPARK-37292) Removes outer join if it only has DISTINCT on streamed side with alias

2021-11-11 Thread Apache Spark (Jira) 


[ 
https://issues.apache.org/jira/browse/SPARK-37292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17442288#comment-17442288
 ] 

Apache Spark commented on SPARK-37292:
--

User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/34557

> Removes outer join if it only has DISTINCT on streamed side with alias
> --
>
> Key: SPARK-37292
> URL: https://issues.apache.org/jira/browse/SPARK-37292
> Project: Spark
>  Issue Type: Improvement
>  Components: SQL
>Affects Versions: 3.3.0
>Reporter: Yuming Wang
>Priority: Major
>
> {code:scala}
> spark.range(200L).selectExpr("id AS a").createTempView("t1")
> spark.range(300L).selectExpr("id AS b").createTempView("t2")
> spark.sql("SELECT DISTINCT a AS newAlias FROM t1 LEFT JOIN t2 ON a = 
> b").explain(true)
> {code}
> Expected optimized plan:
> {noformat}
> == Optimized Logical Plan ==
> Aggregate [newAlias#8L], [newAlias#8L]
> +- Project [id#0L AS newAlias#8L]
>+- Range (0, 200, step=1, splits=Some(2))
> {noformat}



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