the g.

Join fetching multiple collection roles also sometimes gives unexpected results for bag mappings, so be careful about how you formulate your queries in this case.

TODO: The last statement is useless and typical developer thinking, please elaborate. The word “sometimes” should never appear in any technical documentation.

http://docs.jboss.org/ejb3/app-server/HibernateEntityManager/reference/en/html_single/index.html#queryhql

Sowas liest man doch immer wieder gerne in der Doku von (eigentlich relativ ausgereiften) Open Source-Projekten…