I was curious if LINQ'ing against a lazy-loaded collection would
smartly query like it does when using the INHibernateQueryable, so I
did a test.  I believe my results show that it still loads the list,
but I want to explain my thinking and results here to see if I'm on
the right track.

I'm storing Customers and Transactions.  I have a Customer entity, and
it in turn has an ICollection<Transaction> property named
Transactions.

If I do "myCustomer.Transactions.Count(txn => txn.Amount > 100)", the
generated SQL shows it selecting all transactions for that customer
ID.

However, if I do "myNHibernateQueryable.Count(txn => txn.Amount >
100)", the generated SQL shows it selecting only those transactions
where the amount is greater than 100.

Do my observations seem correct?

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