QuerySyntaxException for valid JPQL query using the IN operator --------------------------------------------------------------- Key: HHH-6913 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6913 Project: Hibernate Core Issue Type: Bug Components: query-hql Affects Versions: 3.6.9 Environment: Hibernate 3.6.9, MySQL 5.1 Reporter: Luis Fernando Planella Gonzalez The following query, which is valid JPQL: select person from Person person where person.id is not null and (person.category is null or person.category in :a1) Generates the following error: org.hibernate.hql.ast.QuerySyntaxException: unexpected AST node: {vector} [select person from entities.Person person where person.id is not null and (person.category is null or person.category in :a10_, :a11_)] The in clause is not correct. Note that if removing the 'person.id is not null and' part, the query works. Here is the working example: select person from Person person where person.category is null or person.category in :a1 So, the closing parenthesis must be confusing the IN clause handling. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira