Deleting items by ID in MongoDB

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Deleting items by ID in MongoDB

Author：JIYIK Last Updated：2025/04/27 Views：

Sometimes we need to delete data from a database based on specified criteria. Unlike other SQL databases, MongoDB does not include SQL queries for this purpose. Instead, it uses commands.

This article will discuss how to delete documents based on certain conditions like ID etc. Also, we will look at an example with explanations on the topic to make it easier.

Deleting a document by ID in MongoDB

MongoDB includes a deleteOne()built-in method called for performing delete operations. This function takes various criteria as parameters.

The general syntax of this method is as follows.

db.Your_Collection.deleteOne({ Your_Criteria_Here })

Since we are willing to delete documents based on their IDs, we can update the syntax as follows:

db.mycollection.deleteOne( {"_id": ObjectId("Your_ID_Here")});

Now, let's look at an example related to this topic.

In the following example, we will illustrate how to delete a document based on a specified ID. To do this, let's first create some documents in the collection.

{
  "_id": ObjectId("6371fd850f19826ee6ca5139")
  "sl": 1,
  "Name": "Alex"
}
{ _id: ObjectId("6371fd850f19826ee6ca5138"),
  sl: 0,
  Name: 'Alen'
}

Now, let's delete a document with ID 6371fd850f19826ee6ca5139. To do this, we will use the following command

db.mycollection.deleteOne( {"_id": ObjectId("6371fd850f19826ee6ca5139")});

After executing the above command, you will get the output as shown below.

{ acknowledged: true, deletedCount: 1 }
{ _id: ObjectId("6371fd850f19826ee6ca5138"),
  sl: 0,
  Name: 'Alen'
}

请注意The commands shown in this article are for MongoDB databases and need to be run on the MongoDB console.

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