For this, use $push along with update. Let us create a collection with documents −> db.demo573.insertOne( ...    { ...       '_id' :101, ...       'SearchInformation' : [ ...          { ...             'Site' : 'Facebook.com', ...   ... Read More

For case, insensitive search, use regex in find() method. Following is the syntax −db.demo572.find({"yourFieldName" : { '$regex':/^yourValue$/i}});To understand the above syntax, let us create a collection with documents −> db.demo572.insertOne({"CountryName":"US"});{    "acknowledged" : true, "insertedId" : ObjectId("5e915f0e581e9acd78b427f1") } > db.demo572.insertOne({"CountryName":"UK"});{    "acknowledged" : true, "insertedId" : ObjectId("5e915f17581e9acd78b427f2") } > db.demo572.insertOne({"CountryName":"Us"});{ ... Read More

To find values above a specific value, the following is the syntax using $gte in MongoDB −db.yourCollectionName.find({yourFieldName:{$gte:yourValue}});Let us create a collection with documents −> db.demo571.insertOne({"Price":140});{    "acknowledged" : true, "insertedId" : ObjectId("5e909b3439cfeaaf0b97b587") } > db.demo571.insertOne({"Price":100});{    "acknowledged" : true, "insertedId" : ObjectId("5e909b3639cfeaaf0b97b588") } > db.demo571.insertOne({"Price":110});{    "acknowledged" : true, "insertedId" ... Read More

For this, use aggregate() in MongoDB. Let us create a collection with documents −> db.demo718.insertOne( ...    { ...       "id":101, ...       "details": ...       { ...          "OtherDetails": ["Chris", "Mike", "Sam"], "GroupName": ["Group-1"], "Info": [] ...       ... Read More

For aggregation, use aggregate() in MongoDB. Group the dates with $group. Let us create a collection with documents −> db.demo717.insertOne( ...    { ...       "shippingdetails": ...       [ ...          { ...             duedate:"2020-04-29 22:33:04", ...   ... Read More

Use the following syntax to create hierarchical JSON in MongoDB −db.demo716.insertOne(    {       yourFieldName1,       yourFieldName2,       .       .       N,       "fieldName": {          yourFieldName1,          yourFieldName2,     ... Read More

To remove an object in a child collection, use $pull in MongoDB. Let us create a collection with documents −> db.demo715.insertOne({ ...    _id:1, ...    details : ...    [ ...       { 'id' : '101', ...       'Information' : [ ...       ... Read More

Let us create a collection with documents −> db.demo714.insertOne({FirstName:"Chris", LastName:"Brown"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5ea9a2da85324c2c98cc4c2b") } > db.demo714.insertOne({FirstName:"Adam", LastName:"Smith"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5ea9a2e585324c2c98cc4c2c") } > db.demo714.insertOne({FirstName:"David", LastName:"Miller"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5ea9a2ed85324c2c98cc4c2d") } > db.demo714.insertOne({FirstName:"John", LastName:"Doe"}); { ... Read More

Use $ along with update command to update tag records. Let us create a collection with documents −> db.demo713.insertOne( ...    { ...       tags: ...       [ ...          { ...             id:101, ...       ... Read More

To add a new field, use $addFields in MongoDB. Let us create a collection with documents −> db.demo712.insertOne({"Name":"John"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5ea85f675d33e20ed1097b82") } > db.demo712.insertOne({"Name":"Chris"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5ea85f6a5d33e20ed1097b83") } > db.demo712.insertOne({"Name":"Bob"}); {    "acknowledged" : true,    "insertedId" : ... Read More