Mongodb and sorting sub array

Question

Not sure if this can be done, so thought I would ask.

I have the following mongodb/s

{
 \"store\":\"abc\",
 \"offers\":[{
    \"spend\":\"100.00\",
          


        

Answer 1

Amazingly, yes, mongodb can do this:

// Sort ascending, by minimum percentage value in the docs' offers array.
db.collection.find({}).sort({ 'offers.percentage': 1 });

// Sort descending, by maximum percentage value in the docs' offers array.
db.collection.find({}).sort({ 'offers.percentage': -1 });