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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