Maxim Gekk created SPARK-29364:
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Summary: Return intervals from date subtracts
Key: SPARK-29364
URL: https://issues.apache.org/jira/browse/SPARK-29364
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.4
Reporter: Maxim Gekk
According to the SQL standard, date1 - date2 is an interval. See
http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt at +_4.5.3
Operations involving datetimes and intervals_+. The ticket aims to modify the
DateDiff expression to produce another expression of the INTERVAL type When
wspark.sql.ansi.enabled` is set to *true* and `spark.sql.dialect` is *Spark*.
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