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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/04/10 05:20:00 UTC
[jira] [Commented] (SPARK-34444) Pushdown scalar-subquery filter to FileSourceScan
[ https://issues.apache.org/jira/browse/SPARK-34444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17520079#comment-17520079 ]
Apache Spark commented on SPARK-34444:
--------------------------------------
User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/36128
> Pushdown scalar-subquery filter to FileSourceScan
> -------------------------------------------------
>
> Key: SPARK-34444
> URL: https://issues.apache.org/jira/browse/SPARK-34444
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Yuming Wang
> Priority: Major
>
> We can pushdown {{a < (select max(d) from t2)}} to FileSourceScan:
> {code:scala}
> sql("CREATE TABLE t1 using parquet AS SELECT id AS a, id AS b FROM range(500000000L)")
> sql("CREATE TABLE t2 using parquet AS SELECT id AS d FROM range(20)")
> sql("SELECT * FROM t1 WHERE b = (select max(d) from t2)").show
> {code}
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