[jira] [Created] (SPARK-28566) window functions should not be allowed in window definitions

["Dylan Guedes (JIRA)" <ji...@apache.org>]

Dylan Guedes created SPARK-28566:
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             Summary: window functions should not be allowed in window definitions
                 Key: SPARK-28566
                 URL: https://issues.apache.org/jira/browse/SPARK-28566
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Dylan Guedes


Currently, Spark allows the usage of window functions inside window definitions, such as:
{code:sql}
 SELECT rank() OVER (ORDER BY rank() OVER (ORDER BY random()));{code}
However, in PgSQL such behavior is now allowed:
{code:sql}
postgres=# SELECT rank() OVER (ORDER BY rank() OVER (ORDER BY random()));
ERROR:  window functions are not allowed in window definitions
LINE 1: SELECT rank() OVER (ORDER BY rank() OVER (ORDER BY random())...{code}



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