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Academy 3T

  • MongoDB 101: Getting Started
  • MongoDB 201: Querying MongoDB Data
  • MongoDB 301: Aggregation

Lesson 1, Exercise 4: Deleting a document from a collection

MongoDB 201: Querying MongoDB Data Performing MongoDB CRUD Operations Lesson 1, Exercise 4: Deleting a document from a collection

In this exercise, you’ll delete the document you created in the first exercise (the document whose last field value is Grey). To remove the document, you’ll use features available to the Collection Tab.

To delete the document

1. Open the “Grey” record and display it in Tree View if you did not leave it open from the previous exercise.

2. On the Result tab, select the row that contains the _id field, and then click the Show remove dialog button (icon) on the Result tab toolbar.

Studio 3T launches the Remove Documents dialog box and displays an expression that specifies the _id field and the record’s unique identifier (the one associated with the “Grey” record), as shown in the following figure.

delete document

The code snippet defines the logic necessary to delete the “Grey” record, which in this case, is the selected document.

3. Click the Validate JSON button. You should receive a message saying that the query JSON is valid. Click OK to close the message box and return to the Remove Documents dialog box.

4. Click Remove. You should receive a message stating that one document has been removed. Click OK to close the message box.

Dialog box

5. If the Query text box still includes the expression you specified in Exercise 2, delete the expression and click the Run query button (Icon) to the right of the Query text box. 

6. At the bottom of the Result tab, click the Count Document button. The customers collection should now contain only the original 1,000 documents. 

7. Close the customers collection tab, but do not drop the collection or database. You will need them for the rest of this course.

8. Close Studio 3T.

Next – Test your skills: Performing CRUD Operations
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  • Course Home Expand All
    Performing MongoDB CRUD Operations
    4 Topics | 1 Quiz
    Lesson 1, Exercise 1: Adding a document to a collection
    Lesson 1, Exercise 2: Viewing a document in a collection
    Lesson 1, Exercise 3: Updating a document in a collection
    Lesson 1, Exercise 4: Deleting a document from a collection
    Test your skills: Performing CRUD Operations
    Building MongoDB find() Queries
    4 Topics | 1 Quiz
    Lesson 2: The MongoDB find method
    Lesson 2, Exercise 1: Using IntelliShell to build and run find statements
    Lesson 2, Exercise 2: Using Visual Query Builder to build and run find statements
    Lesson 2, Exercise 3: Using Query Code and IntelliShell to modify and run a find statement
    Test your skills: Building MongoDB find() Queries
    Working with the MongoDB Aggregation Pipeline
    6 Topics | 1 Quiz
    Lesson 3: Introducing the MongoDB aggregate method
    Lesson 3, Exercise 1: Filtering the documents in the aggregation pipeline
    Lesson 3, Exercise 2: Grouping the documents in the aggregation pipeline
    Lesson 3, Exercise 3: Adding and removing fields in the aggregation pipeline
    Lesson 3, Exercise 4: Changing the field order in the aggregation pipeline
    Lesson 3, Exercise 5: Sorting the documents in the aggregation pipeline
    Test your skills: Working with the MongoDB Aggregation Pipeline
    Querying Arrays Using MongoDB $elemMatch
    3 Topics | 1 Quiz
    Lesson 4, Exercise 1: Using IntelliShell to query single and multiple values in an array
    Lesson 4, Exercise 2: Using Visual Query Builder to query a single array value
    Lesson 4, Exercise 3: Using Visual Query Builder to query multiple array values
    Test your skills: Querying Arrays Using MongoDB $elemMatch
    Querying Embedded Documents in MongoDB Arrays
    3 Topics | 1 Quiz
    Lesson 5, Exercise 1: Using the $elemMatch operator to query embedded documents
    Lesson 5, Exercise 2: Using conditional operators to query embedded documents
    Lesson 5, Exercise 3: Using Visual Query Builder to query embedded documents
    Test your skills: Querying Embedded Documents in Arrays
    Querying MongoDB with SQL SELECT Statements
    2 Topics | 1 Quiz
    Lesson 6, Exercise 1: Using the SQL Query tool to run SQL statements
    Lesson 6, Exercise 2: Using the SQL Query tool to aggregate collection data
    Test your skills: Querying MongoDB with SQL
    Working with MongoDB Views
    3 Topics | 1 Quiz
    Lesson 7, Exercise 1: Creating a MongoDB view
    Lesson 7, Exercise 2: Querying a MongoDB view
    Lesson 7, Exercise 3: Modifying and deleting a MongoDB view
    Test your skills: Working with MongoDB Views
    Course Extras
    Return to MongoDB 201: Querying MongoDB Data
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