MongoDB Tutorial for Beginners 12 - MongoDB Indexing

In this video I am going to show you How and why we use Indexing in MongoDB
In this Tutorial we will learn. How to install MongoDB, How to create new collections that store documents, You'll learn about the most common and used MongoDB shell commands to manage your documents.

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MongoDB - Advanced Indexing. Indexing with MongoDB. Indexes — Doctrine MongoDB. Optimizing MongoDB Compound Indexes
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[larryelswick]

Highly recommend this Tutorial for the beginner. Basic concepts well covered in short amount of time.

[SauravSahu]

Deprecated since version 3.0: db.collection.ensureIndex() has been replaced by db.collection.createIndex().

[brazenbull]

Wow, didn't know about this. I was experiencing too much delay with half million records. Now it can find documents very quickly. Thanks much.

[MuhsinunChowdhury]

I'm really appreciating this series. Very clear-cut answers and very thorough explanations. 💯

[ramakrishnapolumuru]

this code reduced my execution time for records 22 minutes to 0.5 minutes thank you for this tutorial

[vishnukarthikreddy]

Ultimate explanation. Thanks a ton Bro.

[adamadamski]

You can use .limit(10).find() in studio 3T

[nikitpanchal]

What about when a new Record is inserted in your table, do you need to rebuild the indexing ?

[wassilchoujaa]

0:41 thats why my query took long. I got 15 Mil documents. I m trying this rn.

[gauravlotey]

You explained very well! I am new to this and I have a doubt, I already have an existing collection to which I can use this : value}) command, but what if at later stage I have to add new rows into my collection, will I have to again run this command?

[michakowalski]

What about indexes, where the keys are not unique? For example index of "name" in this example could map to the subset of the collection. Is something like that possible in mongodb?

[PriyankaGupta-muyv]

yes but when i am suppose to run code ensureIndex in real time, anytime if i run this code, its going to slow the process anyway...?

[mrinmayshekhar]

Hi,
I want to try this on my own. Where can i get the data for it?

[sudhanshunautiyal]

sir I have one thought but by default student_id is started with zero so it is also a index or not

[rossgeography]

ensureIndex now deprecated use db.collection.createIndex()

[parthmittal]

Would have been better if you would have shown the execution time using explain command

[NIKHILPARIHARBESTINTHEWORLD]

nice tutorial i try this on my system query execution is fast in small range but for wide range query execution is still slow. can you tell me solution for this. for example i run

this query is executing slow please tell me solution for this