สร้างคอลเลกชันตัวอย่าง
> db.demo128.insertOne({"Name":"Chris"});
{ "acknowledged": true, "insertedId": ObjectId("5e30583d68e7f832db1a7f5d") }
> db.demo128.insertOne({"Name":"David"});
{ "acknowledged": true, "insertedId": ObjectId("5e30584068e7f832db1a7f5e") }
> db.demo128.insertOne({"Name":"David"});
{ "acknowledged": true, "insertedId": ObjectId("5e30584368e7f832db1a7f5f") }
> db.demo128.insertOne({"Name":"Bob"});
{ "acknowledged": true, "insertedId": ObjectId("5e30584668e7f832db1a7f60") }
> db.demo128.insertOne({"Name":"Chris"});
{ "acknowledged": true, "insertedId": ObjectId("5e30584c68e7f832db1a7f61") }
แสดงข้อมูล
> db.demo128.find();
{ "_id": ObjectId("5e30583d68e7f832db1a7f5d"), "Name": "Chris" }
{ "_id": ObjectId("5e30584068e7f832db1a7f5e"), "Name": "David" }
{ "_id": ObjectId("5e30584368e7f832db1a7f5f"), "Name": "David" }
{ "_id": ObjectId("5e30584668e7f832db1a7f60"), "Name": "Bob" }
{ "_id": ObjectId("5e30584c68e7f832db1a7f61"), "Name": "Chris" }
คิวรี distinct()
> db.demo128.distinct("Name");
ผลลัพธ์: ค่าที่ไม่ซ้ำกัน
[ "Chris", "David", "Bob" ]
