[teiid-issues] [JBoss JIRA] (TEIID-2564) Correlated subqueries throws TEIID30328

Correlated subqueries throws TEIID30328 --------------------------------------- Key: TEIID-2564 URL: https://issues.jboss.org/browse/TEIID-2564 Project: Teiid Issue Type: Bug Components: Query Engine Affects Versions: 8.4 Reporter: Warren Gibson Assignee: Steven Hawkins Fix For: 8.4.1, 8.5 Attachments: server.log Non-pushed correlated subqueries that use a correlation variable that is a grouping column where the subquery is turned into a semi join (either through the MJ hint or costing) will fail to find the correlation values. For example the following against Netezza (which does not support correlated subqueries): SELECT A.INTKEY, A.STRINGNUM FROM BQT1.SMALLA AS A WHERE CONVERT(LONGNUM, STRING) = 8 GROUP BY A.INTKEY, A.STRINGNUM HAVING A.STRINGNUM = (SELECT MAX(B.STRINGNUM) FROM BQT1.SMALLA AS B WHERE A.INTKEY = B.INTKEY throws "TEIID30328 Unable to evaluate A.IntKey: No value was available" If the subplan is not converted to a join or the correlated column is not a grouping expression, then there is no issue.