until now, I think Oreilly EJB book covers EJB-QL very well. I found the spec a little tough to follow especially for EJB-QL. But once you are done with the Oreilly book, you s'd not have any issues following the spec. But am sure K&B w'd have dealt with it in a very intuitive way.
I am looking forward to read EJB-QLsection ( for that matter the entite book) in HF EJB book, I am sure Kathy and Bert have made it very intersting. I wrote beta test with no prepration ( due to time constraints), I also don't have experince in EJB but have a strong SQL background. I actually scored in EJB-QL section very well. I am hoping that Head First EJB book will help me get through the test by Christmas time ( my internal goal). Have a great day! Surendra --- SCJP, SCJD, SCWCD and MCSE
-Surendra Kashyap<br />SCJP, SCJD, SCWCD, SCBCD and MCSE