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From "hongbin ma (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CALCITE-1639) issue for timestampadd month
Date Thu, 16 Feb 2017 08:38:41 GMT
hongbin ma created CALCITE-1639:
-----------------------------------

             Summary: issue for timestampadd month
                 Key: CALCITE-1639
                 URL: https://issues.apache.org/jira/browse/CALCITE-1639
             Project: Calcite
          Issue Type: Bug
            Reporter: hongbin ma
            Assignee: Julian Hyde


in calcite, 

select timestampadd(MONTH,1,cast('2016-05-31' as timestamp))  will return 2016-07-01 00:00:00,
and select timestampadd(MONTH,-1,cast('2016-03-31' as timestamp))  will return 2016-03-01
00:00:00

however in mysql, the last day of the next/previous month is always returned:

mysql> select timestampadd(MONTH,1,'2016-05-31') ;
+------------------------------------+
| timestampadd(MONTH,1,'2016-05-31') |
+------------------------------------+
| 2016-06-30                         |
+------------------------------------+
1 row in set (0.00 sec)

mysql> select timestampadd(MONTH,-1,'2016-03-31') ;
+-------------------------------------+
| timestampadd(MONTH,-1,'2016-03-31') |
+-------------------------------------+
| 2016-02-29                          |
+-------------------------------------+
1 row in set (0.00 sec)

mysql> 




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