What should be used to implement MySQL LIKE statement in MongoDB?

Smita Kapse

Answered on 13th Jun, 2019

To get MySQL LIKE statement, use the REGEX in MongoDB. Let us first create a collection with documents −

> db.likeInMongoDBDemo.insertOne({"Name" : "Sam"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd6922857806ebf1256f123")
}
> db.likeInMongoDBDemo.insertOne({"Name" : "John" });
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd6923157806ebf1256f124")
}
> db.likeInMongoDBDemo.insertOne({"Name" : "Scott"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd6924557806ebf1256f125")
}
> db.likeInMongoDBDemo.insertOne({"Name" : "Sean"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd6924f57806ebf1256f126")
}
> db.likeInMongoDBDemo.insertOne({"Name" : "Samuel"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cd6925857806ebf1256f127")
}

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

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

This will produce the following output −

{ "_id" : ObjectId("5cd6922857806ebf1256f123"), "Name" : "Sam" }
{ "_id" : ObjectId("5cd6923157806ebf1256f124"), "Name" : "John" }
{ "_id" : ObjectId("5cd6924557806ebf1256f125"), "Name" : "Scott" }
{ "_id" : ObjectId("5cd6924f57806ebf1256f126"), "Name" : "Sean" }
{ "_id" : ObjectId("5cd6925857806ebf1256f127"), "Name" : "Samuel" }

Following is the query to perform REGEX to match the MySQL LIKE statement in MongoDB −

> db.likeInMongoDBDemo.find({"Name":{$regex:"Sam"}});

This will produce the following output −

{ "_id" : ObjectId("5cd6922857806ebf1256f123"), "Name" : "Sam" }
{ "_id" : ObjectId("5cd6925857806ebf1256f127"), "Name" : "Samuel" }