Match MongoDB documents with fields not containing values in array?

MongoDBDatabaseBig Data Analytics

To match documents with fields not containing values in array, use $nin. Let us create a collection with documents −

> db.demo180.insertOne({"Scores":["80","90","110"]});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e3988a69e4f06af551997fb")
}
> db.demo180.insertOne({"Scores":["110","70","60"]});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e3988b79e4f06af551997fc")
}
> db.demo180.insertOne({"Scores":["40","70","1010"]});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e3988cc9e4f06af551997fd")
}

Display all documents from a collection with the help of find() method −

> db.demo180.find();

This will produce the following output −

{ "_id" : ObjectId("5e3988a69e4f06af551997fb"), "Scores" : [ "80", "90", "110" ] }
{ "_id" : ObjectId("5e3988b79e4f06af551997fc"), "Scores" : [ "110", "70", "60" ] }
{ "_id" : ObjectId("5e3988cc9e4f06af551997fd"), "Scores" : [ "40", "70", "1010" ] }

Following is the query to match documents with fields not containing values in array −

> db.demo180.aggregate({ "$match": { "Scores": { "$nin": ["110","90"] } } }).pretty();

This will produce the following output −

{
   "_id" : ObjectId("5e3988cc9e4f06af551997fd"),
   "Scores" : [ "40", "70", "1010" ]
}
raja
Published on 27-Mar-2020 12:23:01
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