Syntax error How do you perform an AND query on an array in MongoDB?

How do you perform an AND query on an array in MongoDB?



To get the same result like AND in MongoDB, use the $all operator. Let us first create a collection with documents −

> db.andQueryDemo.insertOne({"StudentName":"Carol Taylor","FavouriteSubject":["C","Java","MongoDB","MySQL"]});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cc73e7a8f9e6ff3eb0ce433")
}
> db.andQueryDemo.insertOne({"StudentName":"David Miller","FavouriteSubject":["C++","Java","MongoDB","SQL Server"]});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cc73ea48f9e6ff3eb0ce434")
}
> db.andQueryDemo.insertOne({"StudentName":"Carol Taylor","FavouriteSubject":["Python","PL/SQL"]});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cc73ed38f9e6ff3eb0ce435")
}

Following is the query to display all documents from a collection with the help of find() method −

> db.andQueryDemo.find().pretty();

This will produce the following output −

{
   "_id" : ObjectId("5cc73e7a8f9e6ff3eb0ce433"),
   "StudentName" : "Carol Taylor",
   "FavouriteSubject" : [
      "C",
      "Java",
      "MongoDB",
      "MySQL"
   ]
}
{
   "_id" : ObjectId("5cc73ea48f9e6ff3eb0ce434"),
   "StudentName" : "David Miller",
   "FavouriteSubject" : [
      "C++",
      "Java",
      "MongoDB",
      "SQL Server"
   ]
}
{
   "_id" : ObjectId("5cc73ed38f9e6ff3eb0ce435"),
   "StudentName" : "Carol Taylor",
   "FavouriteSubject" : [
      "Python",
      "PL/SQL"
   ]
}

Following is the query to do an AND query on an array in MongoDB with $all. Here, we are displaying the array with both “Java” and “MongoDB” as FavouriteSubject −

> db.andQueryDemo.find({FavouriteSubject:{$all:["Java","MongoDB"]}}).pretty();

This will produce the following output −

{
   "_id" : ObjectId("5cc73e7a8f9e6ff3eb0ce433"),
   "StudentName" : "Carol Taylor",
   "FavouriteSubject" : [
      "C",
      "Java",
      "MongoDB",
      "MySQL"
   ]
}
{
   "_id" : ObjectId("5cc73ea48f9e6ff3eb0ce434"),
   "StudentName" : "David Miller",
   "FavouriteSubject" : [
      "C++",
      "Java",
      "MongoDB",
      "SQL Server"
   ]
}
Updated on: 2019-07-30T22:30:26+05:30

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