Getting an unexpected token : UNION when running a query -------------------------------------------------------- Key: WFLY-7567 URL: https://issues.jboss.org/browse/WFLY-7567 Project: WildFly Issue Type: Bug Components: JPA / Hibernate Affects Versions: 10.1.0.Final Environment: Wildfly 10.1.0 Final Cent OS 6 JAVA 1.8.0_40 Reporter: Prasanth Reddy Assignee: Scott Marlow Priority: Critical When running the below EJBQL wildfly 10.1.0 throws an exception. The same works fine in wildfly 9.2.0. I have manually edited the sql below to change the names of tables (so please ignore if there is an error in the sql). The data types of the columns selected are the same. SELECT a.pID FROM Arrangement a WHERE a.pID=30947 AND a.effectiveDate = '08/21/2001' UNION SELECT e.yID FROM Event e WHERE e.policyID=30947 AND e.proceedsDate = '08/20/2001' Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: UNION near line 1, column 86 [SELECT a.pID FROM Arrangement a WHERE a.pID=30947 AND a.effectiveDate = '08/21/2001' UNION SELECT e.yID FROM Event e WHERE e.policyID=30947 AND e.proceedsDate = '08/20/2001'] at org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:74) at org.hibernate.hql.internal.ast.ErrorCounter.throwQueryException(ErrorCounter.java:91) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:288) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:187) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:142) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:76) at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:150) at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:302) at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:240) at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1894) at org.hibernate.jpa.spi.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:291) ... 89 more Thanks, Prasanth