[DERBY-6959] Require the Standard SET keyword in the syntax for changing the cycle behavior of identity columns

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.14.1.0
• Fix Version/s: 10.14.1.0
• Component/s: SQL
• Urgency: Normal
• Assignee: Richard N. Hillegas
• Reporter: Richard N. Hillegas
• Created: 10/Sep/17 19:51
• Updated: 14/Sep/17 01:05
• Resolved: 14/Sep/17 01:05

Description

The correct syntax for changing the cycling behavior of an auto-increment column is...

ALTER TABLE ALTER COLUMN $columnName SET [NO] CYCLE

...according to the 2016 SQL Standard, part 2, sections 11.20 (<alter identity column specification) and 11.72 (<sequence generator definition>). This is also the syntax used by DB2 (see https://www.ibm.com/support/knowledgecenter/en/SSEPEK_10.0.0/sqlref/src/tpc/db2z_sql_altertable.html). Right now Derby does not accept the required SET keyword. We should bring Derby into compliance with the Standard. I will attach a patch to do this.

Issue Links

• is related to: DERBY-6960 Cleanup LOOKAHEADS in parser production for ALTER TABLE ALTER COLUMN
• relates to: DERBY-6904 Enhance ALTER TABLE to allow CYCLE option to be changed.