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MongoDB query to skip documents
To skip documents in MongoDB, use skip(). Let us create a collection with documents −
> db.demo263.insertOne({_id:100});
{ "acknowledged" : true, "insertedId" : 100 }
> db.demo263.insertOne({_id:200});
{ "acknowledged" : true, "insertedId" : 200 }
> db.demo263.insertOne({_id:300});
{ "acknowledged" : true, "insertedId" : 300 }Display all documents from a collection with the help of find() method −
> db.demo263.find();
This will produce the following output −
{ "_id" : 100 }
{ "_id" : 200 }
{ "_id" : 300 }Following is the query to skip document −
> result = db.demo263.aggregate([
... {
... $project: {
... v_id: { $ifNull: [null, [100, 200]] }
...
... }
... },
... { $unwind: '$v_id' },
... { $sort: { v_id: 1, _id: 1 } },
...
... { $skip: 2 },
... { $limit: 2 }
...]);This will produce the following output −
{ "_id" : 300, "v_id" : 100 }
{ "_id" : 100, "v_id" : 200 }
Updated on 31-Mar-2020 08:34:31
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