This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
The above HQL query does not work, because Hibernate fails to connect the "cat" alias in the GROUP BY clause to the one being selected. According to the Hibernate manual, it should be possible to give a function result an alias. However, Hibernate does not translate it to its proper value in the native SQL query. What am I doing wrong?