Returning sorted results by number of matches

Users Dgraph
1

My query:

{
	var(func: type(preference)){
		~has @filter(eq(uuid,"2bac1666-f363-4a56-ac25-666345ceaasrael"))
		{
			has {
				mem_preference_uids as uid
			}
		}
	}

	var(func: type(deal)){
		matches: prefers 
		@filter(uid(mem_preference_uids)) {
            		~prefers {
	              		name   		
		                deal_uids as uid
		        }
	        }
         }

Question: How to return like this: ordersort by count(deal.matches) ?

	q(func: type(deal),first:5) @filter(uid(deal_uids)) {
            uid
            uuid
            name
            matches: count(prefers)@filter(uid(mem_preference_uids))
	}
}

I wanted to return results sorted by descending number of matches. How do I do this?

{
  "data": {
    "q": [
      {
        "uid": "0x1a1",
        "uuid": "6cfbd9f1-5fdc-4ca9-a130-d2ab325ddd",
        "name": "sayulaughteru",
        "matches": 2
      },
      {
        "uid": "0x1a3",
        "uuid": "6cfbd9f1-5fdc-4ca9-a130-d2ab325ddf",
        "name": "maude",
        "matches": 1
      },
      {
        "uid": "0x1ab",
        "uuid": "6cfbd9f1-5fdc-4ca9-a130-d2ab325ddmg",
        "name": "morag",
        "matches": 1
      },
      {
        "uid": "0x1ad",
        "uuid": "6cfbd9f1-5fdc-4ca9-a130-d2ab325ddmln",
        "name": "lindeal",
        "matches": 3
      }
    ]
  },
  "extensions": {
    "server_latency": {
      "parsing_ns": 93500,
      "processing_ns": 1533200,
      "encoding_ns": 24100,
      "assign_timestamp_ns": 648000,
      "total_ns": 2415200
    },
    "txn": {
      "start_ts": 8923
    },
    "metrics": {
      "num_uids": {
        "": 23,
        "_total": 71,
        "dgraph.type": 0,
        "has": 1,
        "name": 8,
        "prefers": 9,
        "uid": 11,
        "uuid": 5,
        "~has": 11,
        "~prefers": 3
      }
    }
  }
}
2

Something like this:

q(func: type(deal),first:5, orderasc: matches) @filter(uid(deal_uids))  {

You might need to put your core query into a subquery first. If you have some data and schema, I can reproduce and give you the full answer