3. Insert sample data

In this tutorial you will learn to insert sample data to Percona Server for MongoDB.

MongoDB provides multiple methods for data insert . We will use a For loop to insert some sample documents.

1. Run the following command:

   admin> for (var i = 1; i <= 50; i++) {
      db.test.insertOne( { x : i } )
   }
   

   If there is no test collection created, MongoDB creates when inserting documents.

   Output

   {
     acknowledged: true,
     insertedId: ObjectId("652567e5eedca48f97e1868f")
   }
   

2. Query the collection to verify the data insertion

   admin> db.test.find()
   

   Output

   [
     { _id: ObjectId("652567e4eedca48f97e1865e"), x: 1 },
     { _id: ObjectId("652567e4eedca48f97e1865f"), x: 2 },
     { _id: ObjectId("652567e4eedca48f97e18660"), x: 3 },
     { _id: ObjectId("652567e4eedca48f97e18661"), x: 4 },
     { _id: ObjectId("652567e4eedca48f97e18662"), x: 5 },
     { _id: ObjectId("652567e4eedca48f97e18663"), x: 6 },
     { _id: ObjectId("652567e4eedca48f97e18664"), x: 7 },
     { _id: ObjectId("652567e4eedca48f97e18665"), x: 8 },
     { _id: ObjectId("652567e4eedca48f97e18666"), x: 9 },
     { _id: ObjectId("652567e4eedca48f97e18667"), x: 10 },
     { _id: ObjectId("652567e4eedca48f97e18668"), x: 11 },
     { _id: ObjectId("652567e4eedca48f97e18669"), x: 12 },
     { _id: ObjectId("652567e4eedca48f97e1866a"), x: 13 },
     { _id: ObjectId("652567e4eedca48f97e1866b"), x: 14 },
     { _id: ObjectId("652567e4eedca48f97e1866c"), x: 15 },
     { _id: ObjectId("652567e4eedca48f97e1866d"), x: 16 },
     { _id: ObjectId("652567e4eedca48f97e1866e"), x: 17 },
     { _id: ObjectId("652567e4eedca48f97e1866f"), x: 18 },
     { _id: ObjectId("652567e4eedca48f97e18670"), x: 19 },
     { _id: ObjectId("652567e4eedca48f97e18671"), x: 20 }
   ]
   

   You will have different _id values.

Now your cluster has some data in it.

Next steps

Make a backup

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Last update: December 2, 2025
Created: December 2, 2025