How can i calculate price positive and negative price using mongodb or robomongo?

Question

below is my userpricing collection data

{
    \"_id\" : ObjectId(\"584bc9ba420a6b189c510af6\"),
    \"user_id\" : 1,
    \"mobilenumber\":\"01234\",
    \"p         


        

Answer 1

You can try bulk write to bulk upload the update queries created from aggregation result and update the summary collection.

Here is a quick code that you can try from Mongo shell and you can adjust to your needs.

The below code queries for user_id and increments the price values based on the aggregation values and upserts if no matching user_id is found.

You should change the batch based on your needs.

var bulk = db.getCollection('summary').initializeUnorderedBulkOp();
var count = 0;
var batch = 1;

db.getCollection('userpricing').aggregate([
    {$group: {
        _id:"$user_id", 
        Totalpositiveprice:{$sum:{$cond:[{ '$gt': ['$price', 0]}, "$price", 0]}}, 
        Totalnegativeprice:{$sum:{$cond:[{ '$lt': ['$price', 0]}, "$price", 0]}},
        Balanceprice:{"$sum":"$price"}}
     },
    {$project: {_id:0, user_id:"$_id", Totalpositiveprice:1, Totalnegativeprice:1, Balanceprice:1}}
]).forEach(function(doc){ 
    var user_id = doc.user_id; 
    var totalpositiveprice = doc.Totalpositiveprice; 
    var totalnegativeprice = doc.Totalnegativeprice; 
    var balanceprice = doc.Balanceprice; 
    bulk.find({ "user_id" : user_id }).upsert().updateOne(
      { $inc: {"Totalpositiveprice" : totalpositiveprice, "Totalnegativeprice" : totalnegativeprice, "Balanceprice" : balanceprice } }
   ); 
    count++;  
    if (count == batch) { 
        bulk.execute(); 
        bulk = db.getCollection('summary').initializeUnorderedBulkOp(); 
        count = 0;
    } 
});

if (count > 0) { 
      bulk.execute(); 
 }