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MongoDB Query to combine AND & OR?
To combine AND & OR in MongoDB, let us first create a collection with documents −
>db.combinedAndOrDemo.insertOne({"StudentFirstName":"John","StudentAge":23,"StudentSkill":"MongoDB"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd306dcb64f4b851c3a13e2")
}
>db.combinedAndOrDemo.insertOne({"StudentFirstName":"Larry","StudentAge":21,"StudentSkill":"MySQL"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd306f3b64f4b851c3a13e3")
}
>db.combinedAndOrDemo.insertOne({"StudentFirstName":"Sam","StudentAge":24,"StudentSkill":"SQL Server"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd30701b64f4b851c3a13e4")
}Following is the query to display all documents from a collection with the help of find() method −
> db.combinedAndOrDemo.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5cd306dcb64f4b851c3a13e2"),
"StudentFirstName" : "John",
"StudentAge" : 23,
"StudentSkill" : "MongoDB"
}
{
"_id" : ObjectId("5cd306f3b64f4b851c3a13e3"),
"StudentFirstName" : "Larry",
"StudentAge" : 21,
"StudentSkill" : "MySQL"
}
{
"_id" : ObjectId("5cd30701b64f4b851c3a13e4"),
"StudentFirstName" : "Sam",
"StudentAge" : 24,
"StudentSkill" : "SQL Server"
}Following is the query for combined AND & OR −
> db.combinedAndOrDemo.find( {"$or":[ {"$and": [{"StudentFirstName": "John"}, {"_id": ObjectId("5cd306dcb64f4b851c3a13e2")}] }, {"StudentSkill" : "MongoDB" } ] } );This will produce the following output −
{ "_id" : ObjectId("5cd306dcb64f4b851c3a13e2"), "StudentFirstName" : "John", "StudentAge" : 23, "StudentSkill" : "MongoDB" }
Updated on: 30-Jul-2019
1K+ Views
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