Linq，SQLServer - 性能

Question

我有一个例子：

  <ItemsControl ItemsSource="{Binding Persons}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{Binding Path=Name}" Width="150" />
                    <ListBox 
                        BorderThickness="0"
                        Background="Transparent"
                        Margin="0 1"
                        ItemsSource="{Binding DataContext.Skills,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}},Mode=OneWay}"
                        SelectedItem="{Binding MasterSkill, Mode=TwoWay}"
                        SelectionMode="Single"
                        ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                        >
                </StackPanel>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>

=＆GT;结果= 100

select count(1) from product where (product.loaisanpham = 10)

=＆GT;结果= 5000000 现在，我有两个问题：

select count(1) from product where (product.giasanpham > 10000)

哪个更快（1）或（2）？ 我正在使用SQL Server 。 我记得当我使用mongodb时，（1）更快（2）