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MongoDB query to find documents having two values in an array conforming to multiple criteria?
For this, use $elemMatch operator. Let us first create a collection with documents −
> db.findDocumentsHaving2Demo.insertOne(
{_id : 101, Values: [78,98]}
);
{ "acknowledged" : true, "insertedId" : 101 }
> db.findDocumentsHaving2Demo.insertOne(
{_id :102, Values : [89,102]}
);
{ "acknowledged" : true, "insertedId" : 102 }Following is the query to display all documents from a collection with the help of find() method −
> db.findDocumentsHaving2Demo.find().pretty();
This will produce the following output −
{ "_id" : 101, "Values" : [ 78, 98 ] }
{ "_id" : 102, "Values" : [ 89, 102 ] }Following is the query to find documents having two values in Array conforming to multiple criteria −
> db.findDocumentsHaving2Demo.find({$and: [
{Values: {$elemMatch: {$gte: 77, $lte: 78}}},
{Values: {$elemMatch: {$gte:90 , $lte: 110}}},
{'Values.2': {$exists: false}}
]});This will produce the following output −
{ "_id" : 101, "Values" : [ 78, 98 ] }
Updated on: 30-Jul-2019
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