Using a regex with text search in MongoDB

To filter records using Regular Expression in MongoDB, use $regex. Let us first create a collection with documents −

> db.demo19.insertOne({"Values":"4321GH"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e1389b955d0fc6657d21f0f")
}
> db.demo19.insertOne({"Values":"12321_Carol"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e1389c755d0fc6657d21f10")
}
> db.demo19.insertOne({"Values":"8765Mike"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e1389d355d0fc6657d21f11")
}

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

> db.demo19.find();

This will produce the following output −

{ "_id" : ObjectId("5e1389b955d0fc6657d21f0f"), "Values" : "4321GH" }
{ "_id" : ObjectId("5e1389c755d0fc6657d21f10"), "Values" : "12321_Carol" }
{ "_id" : ObjectId("5e1389d355d0fc6657d21f11"), "Values" : "8765Mike" }

Here is the query to use regex with text search in MongoDB −

> db.demo19.find({Values: {$regex: /4321|8765/, $options: 'i'}});

This will produce the following output −

{ "_id" : ObjectId("5e1389b955d0fc6657d21f0f"), "Values" : "4321GH" }
{ "_id" : ObjectId("5e1389d355d0fc6657d21f11"), "Values" : "8765Mike" }

AmitDiwan

Updated on 01-Apr-2020 14:30:21

• Related Questions & Answers
• Text search in MongoDB with Regular Expression
• MongoDB Regex Search on Integer Value?
• Implement Text search in MongoDB
• Perform MongoDB full text search
• Using regex in MongoDB findOne()
• Create an index for text search in MongoDB
• MongoDB $regex operator i or I for case insensitive search
• Avoid MongoDB performance issues while using regex
• Significance of regex match() and regex search() function in Python
• Adding default search text to search box in HTML with JavaScript?
• Search a string with special characters in a MongoDB document?
• Set regex in MongoDB $in?
• MongoDB query with case insensitive search?
• Search a value in an object with number keys with MongoDB
• How to search and replace text in a file using Python?