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MongoDB query to convert numeric string to number
To convert numeric string to number, use parseInt() in MongoDB. Let us create a collection with documents −
> db.demo208.insertOne( { "value":"50"} );
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3d92d803d395bdc21346f6")
}
> db.demo208.insertOne( { "value":"2350"} );
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3d92dd03d395bdc21346f7")
}Display all documents from a collection with the help of find() method −
> db.demo208.find();
This will produce the following output −
{ "_id" : ObjectId("5e3d92d803d395bdc21346f6"), "value" : "50" }
{ "_id" : ObjectId("5e3d92dd03d395bdc21346f7"), "value" : "2350" }Following is the query to convert numeric string to number −
> db.demo208.find().forEach( function (doc) {
... doc.value = parseInt(doc.value);
... db.demo208.save(doc);
...});Display all documents from a collection with the help of find() method −
> db.demo208.find();
This will produce the following output −
{ "_id" : ObjectId("5e3d92d803d395bdc21346f6"), "value" : 50 }
{ "_id" : ObjectId("5e3d92dd03d395bdc21346f7"), "value" : 2350 }
Updated on: 27-Mar-2020
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