[DERBY-6476] Allow derived column lists in MERGE statements.

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 10.11.1.1
• Component/s: SQL
• Urgency: Normal
• Assignee: Unassigned
• Reporter: Richard N. Hillegas
• Created: 10/Feb/14 18:41
• Updated: 11/Feb/14 12:17

Description

Derby does not allow derived column lists aliased to the source or target tables in MERGE statement. So, the following statements are not allowed:

merge into t1_036 r( x )
using t2_036 on r.x = t2_036.a
when matched then delete;

merge into t1_036
using t2_036 r( x ) on t1_036.a = r.x
when matched then delete;

Problems with these derived column lists were noted by Knut in a 2014-02-07 comment on DERBY-3155.

Issue Links

• relates to: DERBY-3155 Support for SQL:2003 MERGE statement