[jira] [Created] (SPARK-28297) Handling outer links in CTE subquery expressions

["Peter Toth (JIRA)" <ji...@apache.org>]

Peter Toth created SPARK-28297:
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             Summary: Handling outer links in CTE subquery expressions
                 Key: SPARK-28297
                 URL: https://issues.apache.org/jira/browse/SPARK-28297
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Peter Toth


This query does work in Spark SQL:
{noformat}
select (with cte(x) as (select 1) select x from cte) from test10
{noformat}
But the following query can't handle the outer reference to the {{c}} column of {{test10}} table:
{noformat}
scala> sql("select (with cte(x) as (select c) select x from cte) from test10").show
org.apache.spark.sql.AnalysisException: Expressions referencing the outer query are not supported outside of WHERE/HAVING clauses:
Project [outer(c#41)]
+- OneRowRelation
;;
Project [scalar-subquery#167 [] AS scalarsubquery()#169]
:  +- Project [x#168]
:     +- SubqueryAlias `cte`
:        +- Project [c#41 AS x#168]
:           +- Project [outer(c#41)]
:              +- OneRowRelation
+- SubqueryAlias `default`.`test10`
   +- Relation[c#41] parquet

{noformat}



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