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Match MongoDB documents with fields not containing values in array?
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" ]
}
Updated on: 27-Mar-2020
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