[jira] [Created] (SPARK-29369) Accept strings without `interval` prefix in casting to intervals

["Maxim Gekk (Jira)" <ji...@apache.org>]

Maxim Gekk created SPARK-29369:
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             Summary: Accept strings without `interval` prefix in casting to intervals
                 Key: SPARK-29369
                 URL: https://issues.apache.org/jira/browse/SPARK-29369
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Maxim Gekk


PostgreSQL allows strings without the `interval` prefix while casting a string to an interval:
{code}
maxim=# select cast('1 day' as interval);
 interval 
----------
 1 day
(1 row)
maxim=# select interval '1 microsecond';
    interval     
-----------------
 00:00:00.000001
(1 row)
{code}
See https://www.postgresql.org/docs/current/datatype-datetime.html#DATATYPE-INTERVAL-INPUT



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