摘要:Node.js - Mongooose + Aggreagte
var mongoose = require('mongoose'),
config = require('./config');
mongoose.connect(config.db.host, {
user: config.db.user,
pass: config.db.pass
});
var StatSchema = new mongoose.Schema({
fieldA: String,
fieldB: String,
fieldC: String,
total: String
});
exports.getStat = function (req,callback){
var table = "stat";
var StatModel = mongoose.model(table, StatSchema , table);
console.log('model after');
StatModel
.aggregate({$group:{_id:{fieldA:"$fieldA",fieldB:"$fieldB",fieldC:"$fieldC"},total:{$sum:1}}}
, {$project: { fieldA:1,fieldB:1,fieldC:1,total:1}}
, function (err, res) {
if (err)
callback(err);
else
{
console.log(res);
callback(null, res);
}
}
);
