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Find and replace NumberLong type field in MongoDB?
Use $set operator along with update() for this. Let us first create a collection with documents. Here we have set one field as NumberLong −
> db.findAndReplaceDemo.insertOne({"UserId":NumberLong(101)});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd2c960b64f4b851c3a13b6")
}
> db.findAndReplaceDemo.insertOne({"UserId":NumberLong(110)});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd2c966b64f4b851c3a13b7")
}
> db.findAndReplaceDemo.insertOne({"UserId":NumberLong(101)});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd2c969b64f4b851c3a13b8")
}
> db.findAndReplaceDemo.insertOne({"UserId":NumberLong(120)});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd2c96cb64f4b851c3a13b9")
}
> db.findAndReplaceDemo.insertOne({"UserId":NumberLong(130)});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd2c96eb64f4b851c3a13ba")
}Following is the query to display all documents from a collection with the help of find() method −
> db.findAndReplaceDemo.find().pretty();
This will produce the following output −
{ "_id" : ObjectId("5cd2c960b64f4b851c3a13b6"), "UserId" : NumberLong(101) }
{ "_id" : ObjectId("5cd2c966b64f4b851c3a13b7"), "UserId" : NumberLong(110) }
{ "_id" : ObjectId("5cd2c969b64f4b851c3a13b8"), "UserId" : NumberLong(101) }
{ "_id" : ObjectId("5cd2c96cb64f4b851c3a13b9"), "UserId" : NumberLong(120) }
{ "_id" : ObjectId("5cd2c96eb64f4b851c3a13ba"), "UserId" : NumberLong(130) }Following is the query to find and replace NumberLong type field in MongoDB −
> db.findAndReplaceDemo.update({"UserId":NumberLong(101)}, {$set:{"UserId":NumberLong(10001)}},false,true);
WriteResult({ "nMatched" : 2, "nUpserted" : 0, "nModified" : 2 })Let us check the updated result from the above collection −
> db.findAndReplaceDemo.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5cd2c960b64f4b851c3a13b6"),
"UserId" : NumberLong(10001)
}
{ "_id" : ObjectId("5cd2c966b64f4b851c3a13b7"),
"UserId" : NumberLong(110)
}
{
"_id" : ObjectId("5cd2c969b64f4b851c3a13b8"),
"UserId" : NumberLong(10001)
}
{
"_id" : ObjectId("5cd2c96cb64f4b851c3a13b9"),
"UserId" : NumberLong(120)
}
{
"_id" : ObjectId("5cd2c96eb64f4b851c3a13ba"),
"UserId" : NumberLong(130)
}
Updated on: 30-Jul-2019
319 Views
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