// Iterate over each collection using the forEach method on the array. // For each collection get (find) all the records and forEach on each of them. // Remove the _id field from each record as MongoDB will generate this for you and // you can't have a duplicate. // Save the ...
A $lookup operation in MongoDB, akin to a left outer join, is performed to obtain the parent documents of the retrieved chunks from the same collection. The chunks themselves and any duplicate parent documents are then dropped, and unique parent documents are passed on to the LLM as context...
Using INNER JOIN with the Delete statement allows you to remove duplicate rows from your table in MySQL. The following query uses the concept of the nested query by selecting all the rows that have duplicate records with the lowest customer id. Once found, we will then delete these duplicate...
In MongoDB, CDC works throughoplog(short for operation log), a special built-in replication mechanism that records all operations that modify the data stored in your database. Whenever a change of event happens in your MongoDB instance, such as insert, delete, or update, it is recorded in...
If you have a large collection and need to find out if there are items with duplicate values inside an array. This problem will probably happen to you someday, but don't worry! To check an array for duplicates, we'll use the.aggregate()on MongoDB. ...
How to find duplicate values in a SQL Table How to show all table servers in SQL Master Regex in SQL Efficient column updates in SQL Visualizing SQL joins Indexing essentials in SQL Single quote, double quote, and backticks in MySQL queries ...
How To Fix Oplog Restore Error: E11000 Duplicate Key Error Collection Using Percona Backup for MongoDB March 27, 2023 Gautam ‘E11000 duplicate key error’ is an error that you might have encountered during the restore process. In this blog, we will talk about in wh...
In SQLite, there are multiple ways to avoid duplicate entries. The main reasons that differentiate each of these methods are: The ease of applying them. The rate of effectiveness. The requirements of your database. Manual Removal Before advanced database queries, the norm was to go through ent...
How to find duplicate values in a SQL Table How to show all table servers in SQL Master Regex in SQL Efficient column updates in SQL Visualizing SQL joins Indexing essentials in SQL Single quote, double quote, and backticks in MySQL queries ...
Next step, process it in the service layer: (just proxy and convert the model to DTO or Entity for MongoDb). func (s *Service) AddTask(ctx context.Context, task model.Task) error { return s.Repo.AddTask(ctx, mapper.MapToDto(task)) } Lastly, use the MongoDB client, and save th...