Index or Projection

// This works	
public class Users_ContractCharges : AbstractIndexCreationTask
	{
		public override IndexDefinition CreateIndexDefinition()
		{
			return new IndexDefinition<User, User>()
				{
					Map = results => from user in results select new { user.Id },
					TransformResults = (database, results) => from user in results 
										 from charges in user.Contract.Charges
										 select new
										{
										charges.Name, charges.Type, charges.Value
										}
					
				}
				.ToIndexDefinition(DocumentStore.Conventions);
		}
	}
// This doesnt, but IMO, should work
	public class Users_ContractCharges2 : AbstractIndexCreationTask
	{
		public override IndexDefinition CreateIndexDefinition()
		{
			return new IndexDefinition<User, User.UserContract.SalaryCharge>()
			{
				Map = results => from user in results
								 from charges in user.Contract.Charges
								 select new
								 {
									 charges.Name,
									 charges.Type,
									 charges.Value
								 },
				Reduce = results => from charges in results
									group charges by new { charges.Name, charges.Type } into g
									select new { Name = g.Key.Name, Type = g.Key.Type, Value = g.Max(x => x.Value)},
			}
			.ToIndexDefinition(DocumentStore.Conventions);
		}
	}