88dee399_ing_Hibernate___O_Reilly_Media__Purpose
[Method] sqlRestriction [Parameters] String sql, Object value, Type type [Purpose] 
Applies a constraint expressed in the native SQL of the underlying database, with the supplied JDBC parameter. This can be very powerful, but be aware it might lead to loss of portability.
The Criteria API: Appendix B - Harnessing Hibernate - O'Reilly Media