Finding matching records with LIKE in MongoDB?

Let us first create a collection with documents −

> db.likeDemo.insertOne({"Name":"John",Age:32}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb84984623186894665ae41") } > db.likeDemo.insertOne({"Name":"Chris",Age:25}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb84991623186894665ae42") } > db.likeDemo.insertOne({"Name":"Carol",Age:22}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb849a1623186894665ae43") } > db.likeDemo.insertOne({"Name":"Johnny",Age:22}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb849b2623186894665ae44") } > db.likeDemo.insertOne({"Name":"James",Age:27}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb849bb623186894665ae45") }

Following is the query to display all documents from the collection with the help of find() method −

> db.likeDemo.find().pretty();

This will produce the following output −

{    "_id" : ObjectId("5cb84984623186894665ae41"),    "Name" : "John",    "Age" : 32 } {    "_id" : ObjectId("5cb84991623186894665ae42"),    "Name" : "Chris",    "Age" : 25 } {    "_id" : ObjectId("5cb849a1623186894665ae43"),    "Name" : "Carol",    "Age" : 22 } {    "_id" : ObjectId("5cb849b2623186894665ae44"),    "Name" : "Johnny",    "Age" : 22 } {    "_id" : ObjectId("5cb849bb623186894665ae45"),    "Name" : "James",    "Age" : 27 }

Following is the LIKE query in MongoDB displaying records beginning with Name “Jo” −

> db.likeDemo.find({Name: /^Jo/i } ).pretty();

This will produce the following output −

{    "_id" : ObjectId("5cb84984623186894665ae41"),    "Name" : "John",    "Age" : 32 } {    "_id" : ObjectId("5cb849b2623186894665ae44"),    "Name" : "Johnny",    "Age" : 22 }