mongodb aggregate group
#equivalent of the following SQL instruction:
# SELECT COUNT(*) FROM Table
# GROUP BY your_field
query = db.collection.aggregate([
{
"$group": {
"_id": "$your_field", #GROUP BY your_field
"total": {"$sum":1} #COUNT(*)
}
}
])MONGODB AGGREGATION tutorials
db.stocks.insertMany([
{ name: "Infosys", qty: 100, price: 800 },
{ name: "TCS", qty: 100, price: 2000 },
{ name: "Wipro", qty: 2500, price: 300 }
])Copyright © 2021 Codeinu
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