[DERBY-4736] ASSERT FAIL when code generating a column reference in a join predicate in presence of other outer join reordering

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1, 10.2.1.6, 10.2.2.0, 10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0, 10.5.1.1, 10.5.2.0, 10.5.3.0, 10.6.1.0
• Fix Version/s: 10.5.3.2, 10.6.2.1, 10.7.1.1
• Component/s: SQL
• Issue & fix info: Repro attached
• Assignee: Dag H. Wanvik
• Reporter: Dag H. Wanvik
• Created: 07/Jul/10 17:02
• Updated: 07/Feb/11 22:49
• Resolved: 07/Feb/11 22:49

Description

From schema given in DERBY-4712, this query gives an ASSERT with sane Derby:

rs = s.executeQuery("SELECT 1 FROM (T0 LEFT JOIN (T1 LEFT JOIN (T2 LEFT JOIN " +
" (T3 LEFT JOIN T4 ON 1=1) ON T2.X = T3.X) ON 1=1) ON 1=1) " +
" LEFT JOIN " +
" (T5 INNER JOIN T6 ON 1=1) " +
" ON T2.X = 1 ");

Cf the attachments in DERBY-4712 assert-bind-opt-trees.*.
From preliminary analysis, this error seems to be unrelated to the NPEs reported in DERBY-4712, so filing this as a sub-issue.

Issue Links

• is related to: DERBY-4471 Left outer join reassociation rewrite gives wrong result
• is required by: DERBY-4994 10.5 backport effort issue (2011)