Retrieve entities with children per one sql call. ADO.NET Entity framework
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by Andrew Florko
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Published on 2010-05-01T15:27:58Z
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2010/05/01
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Hello everybody,
I have two tables: A & B
B { B1: Field1, B2: Field2, ... }
A { Children: List of B, A1: Field1, A2: Field2, }
I want to retrieve "A" entities with related "B" entities like this:
DataContext.A.Select( a => new MySubset( A1 = a.A1, Children = a.Children.Select(b => b.B1).ToList());
But EF can't translate ToList into SQL, so i have to call ToList() per each instance in query producing additional network call.
How can I avoid this?
Thank you in advance.
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