[jira] [Created] (SPARK-39259) Timestamps returned by now() and equivalent functions are not consistent in subqueries

["Jan-Ole Sasse (Jira)" <ji...@apache.org>]

Jan-Ole Sasse created SPARK-39259:
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             Summary: Timestamps returned by now() and equivalent functions are not consistent in subqueries
                 Key: SPARK-39259
                 URL: https://issues.apache.org/jira/browse/SPARK-39259
             Project: Spark
          Issue Type: Bug
          Components: Optimizer
    Affects Versions: 3.2.1
         Environment: Reproduced in the Spark Shell on the current 3.4.0 snapshot
            Reporter: Jan-Ole Sasse


Timestamp evaluation in not consistent across subqueries. As an example for the Spark Shell

 
{code:java}
sql("SELECT * FROM (SELECT 1) WHERE now() IN (SELECT now())").collect() {code}
Returns an empty result.

 

The root cause is that [ComputeCurrentTime|https://github.com/apache/spark/blob/c91c2e9afec0d5d5bbbd2e155057fe409c5bb928/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/finishAnalysis.scala#L74] does not iterate into subqueries



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