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Cómo obtener la suma de la cantidad basada en: Id MongoDb

Quiero obtener la suma de la cantidad solo para el ID de elemento que coincide con el parámetro: id, pero obtengo una matriz de todas las sumas de id. ¿Qué hay de malo con el código aquí?

 // get Sum of Sold Qty app.get('/soldqty/:id', async (req, res) => { const id = req.params.id; const item = { _id: ObjectId(id) }; const cursor = await soldCollection.aggregate([ { $group: { _id: "$itemId", TotalSum: { $sum: 1 } } } ] ); const restul = await cursor.toArray(); console.log(restul); res.send(restul); })
over 4 years ago · Santiago Trujillo
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