[jira] [Created] (SPARK-18603) Support `OuterReference` in projection list of IN correlated subqueries

["Dongjoon Hyun (JIRA)" <ji...@apache.org>]

Dongjoon Hyun created SPARK-18603:
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             Summary: Support `OuterReference` in projection list of IN correlated subqueries
                 Key: SPARK-18603
                 URL: https://issues.apache.org/jira/browse/SPARK-18603
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.0.2
            Reporter: Dongjoon Hyun


This issue aims to allow OuterReference columns in projection lists of IN correlated subqueries. 

**EXAMPLE**
{code}
scala> sql("CREATE TEMPORARY VIEW t1 AS SELECT * FROM VALUES 1, 2 AS t1(a)")
scala> sql("CREATE TEMPORARY VIEW t2 AS SELECT * FROM VALUES 1 AS t2(b)")
scala> sql("SELECT a FROM t1 WHERE a IN (SELECT a FROM t2)").show
{code}



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