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Posted to issues@spark.apache.org by "Zack Behringer (JIRA)" <ji...@apache.org> on 2018/10/09 14:23:00 UTC

[jira] [Created] (SPARK-25686) date_trunc Spark SQL function silently returns null if parameters are swapped

Zack Behringer created SPARK-25686:
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             Summary: date_trunc Spark SQL function silently returns null if parameters are swapped
                 Key: SPARK-25686
                 URL: https://issues.apache.org/jira/browse/SPARK-25686
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.3.1, 2.3.0
            Reporter: Zack Behringer


date_trunc(a_timestamp, 'minute') returns null

date_trunc('minute', a_timestamp) returns a valid timestamp

it would be nice to have a runtime error to help catch the problem

This was not helped by the fact that the doc examples had it swapped, but yes I should have tested our use of it more thoroughly



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