Updating Documents

Update operations allow you to modify existing documents using MongoDB-style update operators.

updateOne

Updates the first matching document and returns the updated document (or null).

const updated = users.updateOne(
  { name: 'Alice' },
  { $set: { age: 29, city: 'Port Harcourt' } }
);

updateMany

Updates all matching documents and returns an array of the updated ones.

users.updateMany(
  { city: 'Lagos' },
  { $inc: { age: 1 } }
);

Supported Update Operators

Combining Operators

users.updateOne(
  { name: 'Bob' },
  {
    $set: { lastLogin: new Date().toISOString() },
    $inc: { loginCount: 1 },
    $push: { tags: 'active' }
  }
);

Async Versions

await users.updateOneAsync({ name: 'Alice' }, { $set: { age: 30 } });
await users.updateManyAsync({ city: 'Lagos' }, { $inc: { age: 1 } });