Web16 jul. 2024 · How to get rid of duplicate values in mongoose? 1 . Add unique: true to the attributes. 2 . Drop the collection - for example role (last line) This is simple way to fix - if you have already duplicate values. 3 . Restart the Node.js server, that uses mongoose library. How some of other answers here, are not correct? Show activity on this post. WebHow to remove duplicate array values in MongoDB? MongoDB aggregation group and remove duplicate array values? Use MongoDB aggregate for this and within that, use …
How to prevent duplicates in mongodb timeseries collection
Web18 okt. 2024 · This command pipeline outputs the duplicated keys: If you prefer something more visual, you can use MongoDB Compass and create the aggregation pipeline: You … Webslice the dups array depending on the duplications count (here i had only one extra duplicate for all) items = list (cursor) removeIds = items [0] ['dups'] hold.remove ( {"uuid": {"$in":removeIds}}) this is very run unless you have maximum 1 duplicates per item. order home delivery subway
Remove Duplicates in MongoDB Delft Stack
Web30 nov. 2024 · Finding duplicate values in your database can be difficult, especially if you have millions of documents in the collection. MongoDB's aggregation features make it … Web17 nov. 2024 · Group all documents having the same value in field1; Match the groups that have more than one document; Project all groups that have more than one document; … Web30 nov. 2024 · You can find duplicate values within your MongoDB database using the aggregate method along with the $group and $match aggregation pipeline operators. Let's see how to use the aggregate method in MongoDB. db.list.aggregate ( [ ... ]); The aggregate function takes the parameter as an array of aggregation operators. iredmail ewomail