[ http://issues.apache.org/jira/browse/DERBY-1574?page=comments#action_12423885 ] Manish Khettry commented on DERBY-1574: ---------------------------------------
To me it seems CoalesceFunctionNode should provide a preprocess method but I'm not an authority either! While working on 883, I noticed that CoalesceFunctionNode didn't implement the accept method which caused a NPE with group by's. > NullPointerException in UPDATE with COALESCE and subquery > --------------------------------------------------------- > > Key: DERBY-1574 > URL: http://issues.apache.org/jira/browse/DERBY-1574 > Project: Derby > Issue Type: Bug > Components: SQL > Affects Versions: 10.1.3.1, 10.1.3.0, 10.1.2.1, 10.1.1.0, 10.0.2.1, > 10.0.2.0, 10.0.2.2, 10.1.3.2, 10.1.4.0, 10.2.0.0 > Environment: Java 1.5.0_06 > Reporter: Christian d'Heureuse > Priority: Minor > Attachments: derby1574.diff, predicatePushdown.diff > > > The following statements generate a NullPointerException: > CREATE TABLE t1 (i INTEGER); > CREATE TABLE t2 (i INTEGER); > UPDATE t1 > SET i = COALESCE( > (SELECT i FROM t2 WHERE t2.i=t1.i), > 0); > Any further SQL statements generate an internal error in RawStore, e.g.: > SELECT * FROM t1; -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
