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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: 30-Jul-2019
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