[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-2256) inner join created for not-null="false" many-to-one property

inner join created for not-null="false" many-to-one property ------------------------------------------------------------ Key: HHH-2256 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2256 Project: Hibernate3 Type: Bug

Components: core Versions: 3.1.2 Environment: MS SQL Server Desktop Ed., Hibernate 3.1.2 Reporter: Stephen M. Wick Attachments: Resource.hbm.xml, hibernate_generated_sql.txt Hibernate generates an inner join when a nullable many-to-one property is specified in the ORDER BY clause of an HQL statement. If the property specified in the ORDER BY statement is nullable, then Hibernate should generate an OUTER JOIN to allow nulls in the result set. Instead, for whatever reason, Hibernate put's the property's table in the FROM clause, and JOINS the records with the parent table using a WHERE condition, which is basically an INNER JOIN. By performing the join this way, records with null values in the property being sorted upon are excluded from the query result set when they shouldn't be. I also tried adding hibernate-mapping/class/many-to-one/@outer-join="true", and Hibernate generated the same SQL (inner join). Example HQL: from Staff order by state.name state is a many-to-one not-null="false" property of Staff. Here's the SQL I expected to be generated: select ... from STAFF staff0_ left outer join STATE state1_ on staff0_.STATE_ID = state1_.STATE_ID order by state1_.STATE_NAME asc Here's the SQL that Hibernate generated: select ... from STAFF staff0_, State state1_ where staff0_.STATE_ID = state1_.STATE_ID order by state1_.STATE_NAME asc