Knut Anders Hatlen created DERBY-6563:
-----------------------------------------
Summary: NOT elimination for CASE expressions is broken
Key: DERBY-6563
URL: https://issues.apache.org/jira/browse/DERBY-6563
Project: Derby
Issue Type: Bug
Components: SQL
Affects Versions: 10.10.2.0
Reporter: Knut Anders Hatlen
NOT elimination for CASE expressions seems to be broken. Take this example:
{noformat}
ij> select * from sysibm.sysdummy1 where not ( case when ibmreqd = 'Y' then
true else true end );
IBM&
----
Y
1 row selected
{noformat}
Both branches of the CASE expression evaluate to TRUE, so one would expect the
predicate "not ( case ... )" to evaluate to FALSE, and the query should return
an empty result.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
