MongoDB对分页结果应用排序

Question

I want to apply pagination on my db. the page size is 500. now I want to sort records by page. like I want to sort records of the first page result only. is it possible?

db.getCollection('emp').find().limit(500).sort({Groupcode:1});

this will sort on whole db not on 500 records. i want to sort on pagination result.

Answer 1

You can use an aggregate such as:

db.getCollection('emp').aggregate([
    {"$limit": 500},
    {"$sort": {"Groupcode": 1}}
])

This will first limit the records then apply sorting on limited records