[CALCITE-5698] EXTRACT from INTERVAL partially does not follow the SQL standard

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.34.0
• Fix Version/s: 1.35.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Evgeny Stanilovsky
• Reporter: Evgeny Stanilovsky
• Created: 11/May/23 07:37
• Updated: 27/Jul/23 10:22
• Resolved: 19/May/23 05:04

Description

From SQL standard we can found:

ISO/IEC 9075-2:1999 (E)
6.17 <numeric value function>:

If <extract field> is a <primary datetime field>, then the result is the value of the datetime
field identified by that <primary datetime field> and has the same sign as the <extract
source>.

other data bases are follow this rule, i.e. :

SELECT
  EXTRACT (MONTH FROM INTERVAL '-1' MONTH)
FROM
  DUAL;

returns: -1

and  **  the other one:

SELECT EXTRACT(MONTH FROM INTERVAL '-1 MONTHS')

return the same result,

while calcite:

SELECT EXTRACT(MONTH FROM INTERVAL -1 MONTHS) AS extracted;

< +---------+
< |      -1 |
< +---------+
---
> +-----------+
> |        11 |
> +-----------+

Issue Links

• links to: GitHub Pull Request #3199