Web2 aug. 2024 · I’m trying to remove duplicates of documents, in the collection the collection have millions of records and duplicates data I assume have 100k records. I did use … Web14 apr. 2024 · Multiple Column Example. The DISTINCT keyword may also be applied to multiple columns. In that context, the query will only return rows where all of the selected columns are unique. First, let's add the country field to our last query: Once again, we see duplicates, which makes sense because a duplicated city will likely reside in the same …

mongodb find duplicates multiple fields Code Examples

Web17 nov. 2024 · How to Find Duplicates in MongoDB You can use the following syntax to find documents with duplicate values in MongoDB: db.collection.aggregate([ {" $group " : { "_id": " $field1 ", "count": { " $sum ": 1 } } }, {" $match ": {"_id" :{ " $ne " : null } , … Web11 apr. 2024 · Find MongoDB records where array field is not empty. 683. Find document with array that contains a specific value. 201. Check that Field Exists with MongoDB. Hot Network Questions Inconsistent kerning in units when using detect-all ramsey obits

How to find and remove duplicates in MongoDB Totally Nerdy Ltd

Web14 okt. 2024 · MongoDB compass find multiple values. Click on OPTIONS drop-down button on the left side of the FIND button. And it provides various option that can perform … WebExample: mongodb delete duplicate documents var duplicates = []; db.collectionName.aggregate([ { $match: { name: { "$ne": '' } // discard selection criteria }}, { $g Web14 mei 2024 · MongoDB aggregate to get the count of field values of corresponding duplicate names MongoDB aggregate to get the count of field values of corresponding duplicate names? MongoDB Database Big Data Analytics Let us see an example and create a collection with documents − > db.demo558.insertOne( ... { ... _id : 100, ... overnight repo rate คือ