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The insert command is used to create new documents into a collection. Either a single document or multiple documents can be inserted in one go.
The basic syntax of the insert command is:
db.collection.insert(
<single document or array of documents>,
{
writeConcern: <document>,
ordered: <boolean>
}
)
| Parameter | Description |
|---|---|
<single document or array of documents> |
The document or array of documents to insert into the collection |
writeConcern |
(Optional) A document expressing the write concern. The write concern describes the level of acknowledgment requested from the server for the write operation |
ordered |
(Optional) If true, the server inserts the documents in the order provided. If false, the server can insert the documents in any order and will attempt to insert all documents regardless of errors |
<single document or array of documents>: The document or array of documents to insert into the collection.writeConcern: Optional. A document expressing the write concern. The write concern describes the level of acknowledgment requested from the server for the write operation.ordered: Optional. Iftrue, the server inserts the documents in the order provided. Iffalse, the server can insert the documents in any order and will attempt to insert all documents regardless of errors.
The following command inserts a single document into the stores collection in the StoreData database.
db.stores.insertOne({
"storeId": "12345",
"name": "Boulder Innovations",
"location": {
"lat": 37.7749,
"lon": -122.4194
},
"staff": {
"totalStaff": {
"fullTime": 15,
"partTime": 10
}
},
"sales": {
"totalSales": 500000.00,
"salesByCategory": [
{
"categoryName": "Laptops",
"totalSales": 300000.00
},
{
"categoryName": "Smartphones",
"totalSales": 200000.00
}
]
},
"promotionEvents": [
{
"eventName": "Summer Sale",
"promotionalDates": {
"startDate": "2024-06-01",
"endDate": "2024-06-30"
},
"discounts": [
{
"categoryName": "Laptops",
"discountPercentage": 15
},
{
"categoryName": "Smartphones",
"discountPercentage": 10
}
]
},
{
"eventName": "Holiday Specials",
"promotionalDates": {
"startDate": "2024-12-01",
"endDate": "2024-12-31"
},
"discounts": [
{
"categoryName": "Laptops",
"discountPercentage": 20
},
{
"categoryName": "Smartphones",
"discountPercentage": 25
}
]
}
]
})
The following command inserts an array of documents into the stores collection.
db.stores.insertMany([
{
"storeId": "12346",
"name": "Graphic Design Institute",
"location": {
"lat": 34.0522,
"lon": -118.2437
},
"staff": {
"totalStaff": {
"fullTime": 20,
"partTime": 5
}
},
"sales": {
"totalSales": 750000.00,
"salesByCategory": [
{
"categoryName": "Laptops",
"totalSales": 400000.00
},
{
"categoryName": "Smartphones",
"totalSales": 350000.00
}
]
},
"promotionEvents": [
{
"eventName": "Black Friday",
"promotionalDates": {
"startDate": "2024-11-25",
"endDate": "2024-11-30"
},
"discounts": [
{
"categoryName": "Laptops",
"discountPercentage": 25
},
{
"categoryName": "Smartphones",
"discountPercentage": 30
}
]
}
]
},
{
"storeId": "12347",
"name": "Relecloud",
"location": {
"lat": 40.7128,
"lon": -74.0060
},
"staff": {
"totalStaff": {
"fullTime": 10,
"partTime": 20
}
},
"sales": {
"totalSales": 600000.00,
"salesByCategory": [
{
"categoryName": "Laptops",
"totalSales": 350000.00
},
{
"categoryName": "Smartphones",
"totalSales": 250000.00
}
]
},
"promotionEvents": [
{
"eventName": "New Year Sale",
"promotionalDates": {
"startDate": "2024-01-01",
"endDate": "2024-01-07"
},
"discounts": [
{
"categoryName": "Laptops",
"discountPercentage": 10
},
{
"categoryName": "Smartphones",
"discountPercentage": 15
}
]
}
]
}
])
If the _id field is not specified, the server auto generates a unique ObjectId() value for the document. If the document does specify the _id field, it must be a globally unique value across all documents within the collection.
If a duplicate value for the _id field is specified, a duplicate key violation error will be thrown by the server.
{
"WriteErrors": [
{
"WriteError": {
"err": {
"index": 0,
"code": 11000,
"errmsg": "Duplicate key violation on the requested collection: Index '_id_'",
"errInfo": "undefined",
"op": {
"testField": "testValue",
"_id": "1"
}
}
}
}
]
}
Documents that are inserted in bulk can be inserted in order when specifying "ordered": true
db.stores.insertMany([
{
"_id": "123456",
"storeId": "123456",
"name": "Graphic Design Institute",
"location": {
"lat": 34.0522,
"lon": -118.2437
},
"staff": {
"totalStaff": {
"fullTime": 20,
"partTime": 5
}
},
"sales": {
"totalSales": 750000.00,
"salesByCategory": [
{
"categoryName": "Laptops",
"totalSales": 400000.00
},
{
"categoryName": "Smartphones",
"totalSales": 350000.00
}
]
},
"promotionEvents": [
{
"eventName": "Black Friday",
"promotionalDates": {
"startDate": "2024-11-25",
"endDate": "2024-11-30"
},
"discounts": [
{
"categoryName": "Laptops",
"discountPercentage": 25
},
{
"categoryName": "Smartphones",
"discountPercentage": 30
}
]
}
]
},
{
"_id": "234567",
"storeId": "234567",
"name": "Relecloud",
"location": {
"lat": 40.7128,
"lon": -74.0060
},
"staff": {
"totalStaff": {
"fullTime": 10,
"partTime": 20
}
},
"sales": {
"totalSales": 600000.00,
"salesByCategory": [
{
"categoryName": "Laptops",
"totalSales": 350000.00
},
{
"categoryName": "Smartphones",
"totalSales": 250000.00
}
]
},
"promotionEvents": [
{
"eventName": "New Year Sale",
"promotionalDates": {
"startDate": "2024-01-01",
"endDate": "2024-01-07"
},
"discounts": [
{
"categoryName": "Laptops",
"discountPercentage": 10
},
{
"categoryName": "Smartphones",
"discountPercentage": 15
}
]
}
]
}
], "ordered": true)
The ordered insert command returns a response confirming the order in which documents were inserted:
{
"acknowledged": true,
"insertedIds": {
"0": "123456",
"1": "234567"
}
}