Most orms have something equivalent to HQL/LINQ. HQL allows you to use set operations, which then gets translated into its equivalent sql statement. Thus no ext

Most orms have something equivalent to HQL/LINQ. HQL allows you to use set operations, which then gets translated into its equivalent sql statement. Thus no extra objects get transferred across the network. However there is one thing, most ORMs by default transfer the whole object. What is you only need a few variables?