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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/10/27 15:05:00 UTC
[jira] [Assigned] (SPARK-30220) Support Filter expression uses
IN/EXISTS predicate sub-queries
[ https://issues.apache.org/jira/browse/SPARK-30220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-30220:
------------------------------------
Assignee: Apache Spark
> Support Filter expression uses IN/EXISTS predicate sub-queries
> --------------------------------------------------------------
>
> Key: SPARK-30220
> URL: https://issues.apache.org/jira/browse/SPARK-30220
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: jiaan.geng
> Assignee: Apache Spark
> Priority: Major
>
> Spark SQL cannot supports a SQL with nested aggregate as below:
>
> {code:java}
> select sum(unique1) FILTER (WHERE
> unique1 IN (SELECT unique1 FROM onek where unique1 < 100)) FROM tenk1;{code}
>
> And Spark will throw exception as follows:
>
> {code:java}
> org.apache.spark.sql.AnalysisException
> IN/EXISTS predicate sub-queries can only be used in Filter/Join and a few commands: Aggregate [sum(cast(unique1#x as bigint)) AS sum(unique1)#xL]
> : +- Project [unique1#x]
> : +- Filter (unique1#x < 100)
> : +- SubqueryAlias `onek`
> : +- RelationV2[unique1#x, unique2#x, two#x, four#x, ten#x, twenty#x, hundred#x, thousand#x, twothousand#x, fivethous#x, tenthous#x, odd#x, even#x, stringu1#x, stringu2#x, string4#x] csv file:/home/xitong/code/gengjiaan/spark/sql/core/target/scala-2.12/test-classes/test-data/postgresql/onek.data
> +- SubqueryAlias `tenk1`
> +- RelationV2[unique1#x, unique2#x, two#x, four#x, ten#x, twenty#x, hundred#x, thousand#x, twothousand#x, fivethous#x, tenthous#x, odd#x, even#x, stringu1#x, stringu2#x, string4#x] csv file:/home/xitong/code/gengjiaan/spark/sql/core/target/scala-2.12/test-classes/test-data/postgresql/tenk.data{code}
>
> But PostgreSQL supports this syntax.
> {code:java}
> select sum(unique1) FILTER (WHERE
> unique1 IN (SELECT unique1 FROM onek where unique1 < 100)) FROM tenk1;
> sum
> ------
> 4950
> (1 row){code}
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