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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