- MongoDB Version
- Execution of a JavaScript file in MongoDB
- Complementary Terms
- Installation
- Basic commands on mongo shell
- Hello World
- Update
- Delete
- Read
- Update of embedded documents
- More update operators
- multi Parameter while updating multiple documents
- CRUD Operation Section Create
- Getting database information
- Find
- FindOne
- limit skip sort and count the results of the find method
- Query Document - Using AND OR and IN Conditions
- find method with Projection
- Find method with Projection
- Update Operators
- Upserts and Inserts
- Create a Collection
- Drop Collection
- Aggregation
- Count
- Sum
- Average
- Operations with arrays
- Aggregate query examples useful for work and learning
- Match
- Get sample data
- Remove docs that have a duplicate field in a collection dedupe
- Left Outer Join with aggregation Lookup
- Server Aggregation
- Aggregation in a Server Method
- Java and Spring example
- Index Creation Basics
- Dropping Deleting an Index
- Sparse indexes and Partial indexes
- Get Indices of a Collection
- Compound
- Single field-Delete
- Converting a field to another type and updating the entire collection in Bulk
- Create a 2dsphere Index
- Pluggable Storage Engines-WiredTiger
- Create a database user
- Fetch Collection data with condition
- Create a tailable cursor
- Python Driver
- Connect to MongoDB using pymongo
- PyMongo queries
- Update all documents in a collection using PyMongo
- Sharding Environment Setup
- Basic configuration with three nodes
- Mongodb as a Replica Set
- Check MongoDB Replica Set states
- MongoDB - Configure a ReplicaSet to support TLS SSL
- How to configure a ReplicaSet to support TLS SSL
- How to connect your Client Mongo Shell to a ReplicaSet
- Authentication Mechanisms in MongoDB
- MongoDB Authorization Model
- Configuration
- Backing up and Restoring Data
- mongoimport with JSON
- mongoimport with CSV
- Upgrading MongoDB version
Mongodb Lesson
Converting a field to another type and updating the entire collection in Bulk
Usually the case when one wants to change a field type to another, for instance the original collection may have "numerical" or "date" fields saved as strings:
The objective would be to update a humongous collection like the above to
For relatively small data, one can achieve the above by iterating the collection using a snapshot with the cursor's for Each() method and updating each document as follows:
Anil Bist
Skills Mongodb
Qualifications :- High School - SLV, College/University - Graphic Era Deemed Univ University,Location :-Dehradun,Dehradun,Uttarakhand,India
Description:-
I started my Professional Journey in 2006 with one of the Web Development Company in Bangalore and my 1st framework was "Ruby on Rail" as Web development and delivered around 5+ Projects using this platform. Then came another dimension as JEE/Sturst framework, Gradually I realized that I want to build something on my own and give my passion and energy on creating something different a
Explore