Prevent Entity Framework adding ORDER BY when using Include

问题

We have a query similar to the following:

from x in db.Table.Include(x => x.Parent)
                  .Include(x => x.Parent.Relation)
                  .Include(x => x.Relation)
                  .Include(x => x.Children)
where /* some query */
select x

The problem is that when adding .Include(x => x.Children), the ORDER BY statement that Entity Framework adds to the generated SQL causes the query to take a long time to execute - something like the below:

ORDER BY [Project2].[Id1] ASC, [Project2].[Id2] ASC, [Project2].[Id] ASC, [Project2].[C4] ASC

Adding orderby to the linq query doesn't help either, it doesn't affect the statement above other than adding an additional column to sort by.

回答1:

Apparently, it's something that EF does internally to ease the creation of resulting objects afterwards. You can't remove the order by instruction.

来源：https://stackoverflow.com/questions/25504754/prevent-entity-framework-adding-order-by-when-using-include