how can i order in db

Hi : Mauricio thanks for your project first . i have a doubt that why there is no order in Find

IEnumerable<T> Find(Query query, int skip = 0, int limit = int.MaxValue)

for example , i want take latest 100 docs , i have a field “AddedTime” the normal way is order by AddedTime desc then skip 0 and take(limit) 100 ,that’s what i needed . but without order ,the take is no sence .

what should i do ?

[mbdavid]

Hi @178220709,

If you want take your lasted 100 docs using indexes, you can:

1. Create an index on AddedTime
2. Run `collection.Find(Query.All(“AddedTime”, Query.Descending), 0, 100);

Now you will list all yor documents in AddedTime desc order and get only 100 first.

[mbdavid]

You right, local db has no network and all operations must be executed in local machine.

The only optimization that can be do it is filter. So, Find operation use indexed document field. This is valid optimation. When you use Query.All and than implement a Where linq, it´s more expensive because you need read all data pages and deserialize all documento only to know if match with your clause.

So, my recomendation is: always use Find (when possible) and then use normal Linq implementation.