setMaxResults causes column ambiguously defined exception --------------------------------------------------------- Key: HHH-1436 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1436 Project: Hibernate3 Type: Bug

Components: core Versions: 3.1.2 Environment: Oracle 10g Reporter: Petri Rautakoski Priority: Minor

This is duplicate to HHH-951, but in my opinion this is a bug with Blocker status and I recreated it It seems that if you set any WHERE clause into HQL query it appends this WHERE clause column into SELECT part. This works fine if you just execute it, but if you for example set maximum result size for Query it will produce this HQL query as inner select and wraps it into SELECT * FROM (...) WHERE rownum <= ? query. For example: Mapping: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="Foo" table="foo" lazy="true" > <id name="id" column="id" type="integer" > <generator class="sequence" > <param name="sequence"> <![CDATA[S_FOO]> </param> </generator> </id> </class> </hibernate-mapping> Java code: Query hql = session.createQuery("FROM Foo WHERE id = 123"); hql.setMaxResultSize(2); List results query.list(); produced SQL: SELECT * FROM (SELECT foo0_.id as id12_, foo0_.ID as ID12_ FROM foo as foo0_ WHERE foo0_.id=123) WHERE rownum <= 2 Thrown Exception: [JDBCExceptionReporter] SQL Error: 918, SQLState: 42000 [JDBCExceptionReporter] ORA-00918: column ambiguously defined org.hibernate.exception.SQLGrammarException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:65) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.doList(Loader.java:2148) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) at org.hibernate.loader.Loader.list(Loader.java:2024) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1129) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)