Question 185276 in Mongodb Question posted in
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Mongodb – Clear multiple collection in Mongo Db

I want to delete 20 collection from MongoDB all in one go. Is there any way or through scripts to delete them all?

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2

Answers


  1. 0

    To delete a collection, you can use the DropCollectionAsync method.

    Here is a sample code for dropping multiple collections defined by an array of names:

    var client = new MongoClient(connectionString);
var database = client.GetDatabase(databaseName);
var collectionNames = new List<string> { "collection1", "collection2" };

foreach (var collectionName in collectionNames)
{
    await database.DropCollectionAsync(collectionName);
}
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  2. 0

    You may iterate collections and drop()

        const MongoClient = require("mongodb").MongoClient;

    async function deleteCollections() {
      const uri = "mongodb://localhost:27017/mydb";
      const client = new MongoClient(uri);
      await client.connect();
      const database = client.db("mydb");
      const collections = ["collection1", "collection2", ..., 
      "collection20"];
      for (const collection of collections) {
         await database.collection(collection).drop();
      }
      await client.close();
    }
   deleteCollections();
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