In SQL, 'LIKE' query look like as below
SELECT*FROM[dbo.][USERS]WHEREFNAMELIKE'%DILIP%'
In MongoDB it's look like as below(query in MongoDB console)
db.USERS.find({"FNAME":/DILIP/})
Same as
db.USERS.find({"FNAME":/^DILIP/}) // FNAMELIKE'DILIP%'
$regex in MongoDB