Insert Multiple Documents
The insertMany() method allows you to insert multiple documents in a single operation, which is more efficient than inserting documents one by one.
Basic Multiple Document Insertion
// Insert multiple student documents
db.students.insertMany([
{
firstName: "John",
lastName: "Smith",
age: 20,
email: "john.smith@email.com",
major: "Computer Science",
gpa: 3.8,
enrolled: true,
enrollmentDate: new Date("2023-09-01"),
courses: ["CS101", "MATH201", "ENG102"]
},
{
firstName: "Emma",
lastName: "Johnson",
age: 19,
email: "emma.johnson@email.com",
major: "Mathematics",
gpa: 3.9,
enrolled: true,
enrollmentDate: new Date("2023-09-01"),
courses: ["MATH301", "STAT201", "CS101"]
},
{
firstName: "Michael",
lastName: "Brown",
age: 21,
email: "michael.brown@email.com",
major: "Physics",
gpa: 3.6,
enrolled: true,
enrollmentDate: new Date("2022-09-01"),
courses: ["PHYS301", "MATH401", "CHEM201"]
},
{
firstName: "Sarah",
lastName: "Davis",
age: 22,
email: "sarah.davis@email.com",
major: "Biology",
gpa: 3.7,
enrolled: false,
enrollmentDate: new Date("2021-09-01"),
courses: ["BIO401", "CHEM301", "STAT201"]
}
])
Response from insertMany()
When you run insertMany(), MongoDB returns a response like this:
{
acknowledged: true,
insertedIds: {
'0': ObjectId('65f1a2b3c4d5e6f7a8b9c0d1'),
'1': ObjectId('65f1a2b3c4d5e6f7a8b9c0d2'),
'2': ObjectId('65f1a2b3c4d5e6f7a8b9c0d3'),
'3': ObjectId('65f1a2b3c4d5e6f7a8b9c0d4')
}
}
insertMany() Options
Ordered vs Unordered Insertion
// Ordered insertion (default) - stops on first error
db.students.insertMany([
{firstName: "Alex", lastName: "Wilson", age: 20, major: "Engineering"},
{firstName: "Lisa", lastName: "Taylor", age: 19, major: "Art"},
{firstName: "David", lastName: "Miller", age: 21, major: "History"}
], {ordered: true})
// Unordered insertion - continues even if some documents fail
db.students.insertMany([
{firstName: "Jessica", lastName: "Garcia", age: 20, major: "Psychology"},
{firstName: "Ryan", lastName: "Martinez", age: 22, major: "Business"},
{firstName: "Ashley", lastName: "Anderson", age: 19, major: "Chemistry"}
], {ordered: false})
Write Concern Options
// Insert with write concern
db.students.insertMany([
{firstName: "Kevin", lastName: "Thomas", age: 20, major: "Economics"},
{firstName: "Amanda", lastName: "Jackson", age: 21, major: "Literature"}
], {
writeConcern: {
w: "majority",
j: true,
wtimeout: 5000
}
})
Inserting Documents with Complex Data Types
Documents with Nested Objects
db.students.insertMany([
{
firstName: "Robert",
lastName: "Lee",
age: 20,
email: "robert.lee@email.com",
major: "Computer Science",
gpa: 3.8,
enrolled: true,
personalInfo: {
phone: "+1-555-0123",
address: {
street: "123 Main St",
city: "Springfield",
state: "IL",
zipCode: "62701"
},
emergencyContact: {
name: "Jane Lee",
relationship: "Mother",
phone: "+1-555-0124"
}
},
academicInfo: {
semester: "Fall 2024",
year: "Junior",
credits: 15,
advisor: "Dr. Smith"
},
enrollmentDate: new Date("2022-09-01")
},
{
firstName: "Maria",
lastName: "Rodriguez",
age: 19,
email: "maria.rodriguez@email.com",
major: "Biology",
gpa: 3.9,
enrolled: true,
personalInfo: {
phone: "+1-555-0125",
address: {
street: "456 Oak Ave",
city: "Chicago",
state: "IL",
zipCode: "60601"
},
emergencyContact: {
name: "Carlos Rodriguez",
relationship: "Father",
phone: "+1-555-0126"
}
},
academicInfo: {
semester: "Fall 2024",
year: "Sophomore",
credits: 16,
advisor: "Dr. Johnson"
},
enrollmentDate: new Date("2023-09-01")
}
])
Documents with Arrays of Objects
db.students.insertMany([
{
firstName: "Christopher",
lastName: "White",
age: 21,
email: "chris.white@email.com",
major: "Engineering",
gpa: 3.7,
enrolled: true,
grades: [
{
course: "ENG201",
courseName: "Thermodynamics",
grade: "A",
credits: 3,
semester: "Spring 2024"
},
{
course: "MATH301",
courseName: "Calculus III",
grade: "B+",
credits: 4,
semester: "Spring 2024"
},
{
course: "PHYS201",
courseName: "Physics II",
grade: "A-",
credits: 3,
semester: "Fall 2023"
}
],
activities: [
{
name: "Engineering Club",
role: "Vice President",
startDate: new Date("2023-01-15"),
active: true
},
{
name: "Math Tutoring",
role: "Tutor",
startDate: new Date("2023-08-20"),
active: true
}
]
},
{
firstName: "Jennifer",
lastName: "Clark",
age: 20,
email: "jennifer.clark@email.com",
major: "Psychology",
gpa: 3.85,
enrolled: true,
grades: [
{
course: "PSY301",
courseName: "Cognitive Psychology",
grade: "A",
credits: 3,
semester: "Spring 2024"
},
{
course: "STAT201",
courseName: "Statistics",
grade: "A-",
credits: 3,
semester: "Fall 2023"
},
{
course: "BIO101",
courseName: "General Biology",
grade: "B+",
credits: 4,
semester: "Fall 2023"
}
],
activities: [
{
name: "Psychology Research Lab",
role: "Research Assistant",
startDate: new Date("2024-01-10"),
active: true
},
{
name: "Student Government",
role: "Senator",
startDate: new Date("2023-09-01"),
active: true
}
]
}
])
Inserting Documents with Different Data Types
db.students.insertMany([
{
firstName: "Daniel",
lastName: "Lewis",
age: 22,
email: "daniel.lewis@email.com",
// String
major: "Computer Science",
// Number (Float)
gpa: 3.75,
// Boolean
enrolled: true,
// Date
enrollmentDate: new Date("2021-09-01"),
graduationDate: new Date("2025-05-15"),
// Array
skills: ["Python", "JavaScript", "Java", "SQL"],
// Null
internship: null,
// Object
scholarship: {
name: "Merit Scholarship",
amount: 5000,
renewable: true
}
},
{
firstName: "Nicole",
lastName: "Hall",
age: 19,
email: "nicole.hall@email.com",
major: "Art",
gpa: 3.6,
enrolled: true,
enrollmentDate: new Date("2023-09-01"),
graduationDate: new Date("2027-05-15"),
skills: ["Drawing", "Painting", "Digital Art", "Photography"],
internship: {
company: "Creative Agency",
position: "Design Intern",
startDate: new Date("2024-06-01"),
endDate: new Date("2024-08-31"),
paid: true
},
scholarship: null
}
])