Database Design 39 - Indexes (Clustered, Nonclustered, Composite Index)

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[@jw11432]

First 3 mins I got what I needed. Why are so many people averse to solid, clear examples? Phone book and book index very clearly defining how each index works. Thank you for this explanation, you are the man!

Wow... we need more people like YOU in this world! - You actually KNOW what you are talking about, and WANT TO MAKE IT CLEAR to your audience. Man, THANKS! (I'm your new subscriber)

[@derekthomas1623]

Very clear explanations with great examples. Better than the college professors I pay for.

[@codebreakthrough]

Thank you very much! :)

[@alungiletshangela3051]

You can say that again dud

[@scribbleguy3657]

i agree lol

[@josecastanhas3497]

TRUE, i was looking at their power points for an hour with a friend and couldnt understand shit and now i understand it with just this video

[@benreg5953]

Bro...Yours is probably the best I could find so far. Good work !!

[@HenrySpivy]

agreed... and he didn't even have to use any fancy animations, just straight up used 2 books.

[@rvscootin3457]

P.S. The great part about this video is that I will NEVER again forget the difference between Clustered and Non-Clustered Indexes.

[@krishanudev7573]

mate, you give the most summarized, simplified and elaborated lecture in entire youtube database.

[@JayeSonia]

These are great. I could see a whole series called "Caleb Explains Stuff" (seriously though, you nailed it on clustered indexes, as well as on normalization). Good job sir.

[@MMABeijing]

Caleb, I have to comment one more time and tell you how impressed I am about your teaching style, I am impressed. Is it because I was brought in an area where teachers wrote on black-board? No it;s more than the noise of the chalk-piece, you just have a strange mix of enthusiasm, youth mixed with principled precision. Everybody is special but you are just a level higher, thank you!

[@MrTreshev]

The best explanation which I have ever seen. Thank a lot, man.

[@realjackofall]

It took me 4-6 videos before I landed on this one while trying to understand clustered and non-clustered indexes. This is all I needed. Thanks.👍

[@shawnhu8150]

Thanks so much man! Even after 6 years, your video is still the best out there

[@GuitarreroDaniel]

Hands down to the best index explanation that I've ever seen in my life. Thanks Caleb!

[@ahmadbahrami9437]

I've been searching for the differences between Clustered and Nonclustered for half an hour and understood nothing until I watched your explanation. Thank you

[@LexKul]

Man, I've tried to understand this sh*t for three days now, and you explain it for like 13 minutes :) THANK YOU!

[@nigelmtb]

What everyone else said - excellent definitions and examples. I will be back for more as I am studying databases at the moment. You are doing a much better job than the lecture from a certain Irish university! (Yes, we have those. Don't mock!)

[@johnaugust6414]

I have an interview later today and this topic will surely be a part of the interview. You are the best, thank you so much!

[@k333ys2]

Maaaan this video is great! Took me 10 videos to understand this concept. Appreciate the knowledge being taught in a NON BORING WAY!!! Great job

[@jittenddra]

clustered - Key are sorted unclustered - Key-value pairs are in a Hash Map

[@munshiverma8990]

I loved the analogy of the book index and a phone book to explain the Non-Clustered and Clustered indexes respectively. Good job dear Caleb!

[@siddharthj82]

very good video , your pronunciation is very clear..I am Indian and whenever I refer any tutorial I only understand around 75% of words because of accent, but in your tutorial I have not missed a single word..what a great crystal clear accent :) .........create more videos I am very bad in database :)

[@JoaoRCastro5]

This is the first video of yours that I watch and I have to say I really liked it. Thanks very much for the explanation.

[@chanvanber9857]

can't stop watching your Database related videos..you are the best I could find so far !

[@burropoco]

This plain English explanation just made so much sense to my 40 odd year old brain. Thanks

[@amanriaz1769]

Brilliant! You seem so young, still explained better than most old professors...

[@jbryant789]

The best explanation I've seen re: cluster/noncluster. 1:42 says it all. Just got a new subscriber!

[@omarmiah7496]

I wish all of my professors explained things the way you do, good work.

[@lexus99cl]

First video I've seen that finally explains this well. Must have seen about 7 or 8 ,still didn't have a clue until now. Thnx

[@ladedadedaschlobonmeknob7850]

who needs college when we have CalebTheVideoMaker

[@ILoveMyFrau]

Dude.. you are awesome!

[@PurdueBrad61]

Great video! This really helps breakdown a somewhat complicated subject in a way that is easy to picture and understand. Thanks!

[@nthn135]

Best beginners explanation I've seen so far. Thanks man

[@colinrhee98]

I find your educational videos extremely elucidating! Also, I love the traditional chalkboard setup!

[@ruiluo7848]

Best tutorial I've ever seen! Thank you!

[@ink5473]

The best, I must have looked at 10 videos on this topic and you just nailed it 1) video is not in 480p 2) visual examples 3) SQL explanation But how do you use them in a query SELECT statement?

[@MadForCs16]

One of the best explanations I have heard for a topic.

[@davestorm6718]

best explanation - think "clustered index" as being "clustered" with the actual data(this is the way I had to think of it). Therefore, non-clustered would simply be a pointer to the actual data (it's NOT "clustered" with the data). funny, I've done DBs for 20 years and intuitively setup databases/relationships (hands on), but still get tripped up, now and then, on the theory (and lexicon) - as I found out the hard way in an interview.

[@robertpreston7272]

Great video. This coupled with studying the syntax yourself is a great learning method. Very focused on the 'why?' of it all. Well done.

[@harmonicaman79]

Very good. I really like the comparison of the two metaphors of a book index (non-clustered) vs. a phone book (clustered). When you compared the two, it all clicked. Thanks!

[@SisiraSomaratne]

You are a very good intelligent teacher.

[@mak.ak.uk.]

I'm not a developer, but occasionally dabble in data analysis and database development. I always end up coming back here to get a primer on indexes. DON'T EVER REMOVE THIS VIDEO!

[@kunaldeokar6666]

You are the worlds best teacher...

[@christophersanders7483]

Great video great explanation. Better than anything I have seen. Explained and understood in seconds.

[@logarathinam1782]

I run this complete day by just watching your video...And my book is nearby sleeping..lol..so helpful!!! THANK YOU...This is last video I watched today...I am ending my preparations with this...

[@merickax]

Hi Caleb; You are honestly a very good teacher!

[@ianchui]

LOL 4:34 forEVER!! Great video! Very helpful, and I love this more relaxed style of lecture. Actually makes it fun to learn.

[@rikep.479]

Thank you! You're a lifesaver. Best video about indexes I could find.

[@lynndemarest1902]

Back in the olden days, news reporters and others used cross indexes that sorted the phone book by phone number -- so if you knew the number you could find out who it belonged to and what their address was. There was also an address index book, so you could get the phone number (and name) from the address.

[@oscararmandocisnerosruvalc8503]

The best video ever created !!!

[@drpankaja369]

this is awesome .... superb explanation.. 😃😊👌👍👏✌ .... your tutorials special is, you explain the concepts with examples . it makes the students to get the practical knowledge ..rather than ... roaming around the books .... really good explanation.... it helped

[@chinmayravindran286]

Great video! 1 small thing you missed : 05:52 forgot to add a "FROM " after SELECT and before WHERE.

[@meetdave33]

Bhavnao ko samjho!!

[@shupesmerga4694]

the sound of the chalk ... ughhhhh ... I got goosebumps and I feel like my teeth are going to fall off but GREAT JOB MAN!

[@htetmyomyint2365]

Thank you for your explanation. I'm new to index although I knew about database. You explanation is clear and it's easily understandable by providing. examples.

[@rajkaransingh4770]

the best explanation ever I got on this topic

[@SiyamandRashid]

thanks a lot, now I know why use index and what is difference between clustered and non clustered index

[@hubertpiatek4805]

Man.. absolutely amazing! Thanks a million. This is what I wanted to structure in my head for a long time shown in easy, friendly and funny way. Carry on! will go thru others

[@petraslobodova4979]

Very good explanation, the only one I understood, did not get the one from my paid course.. thank you!

[@Max-my6rk]

Wow subbed u need to do more advanced stuff on dB... like btrees hashing sorting query optimization

[@surajkumarsingh4857]

Very nice explanation of Clustered and Non clustered index

[@awallaustin]

most amazing explanation i've found thus far. thank you

[@beltek01]

amazing explanation..crisp precise and very easy to grasp

[@rvscootin3457]

Seriously!!! This is a great video! I love the simplistic analogies. AAA+++

[@hoonbae244]

This has been such a helpful explanation of indexes. Thank you so much!

[@mrginn]

You're such a great teacher. Thank you so much dude!

[@robertoenriquechavezrodrig731]

Awesome video bro, thank you so much! Much love to you from Innopolis, Russia :) Thursday, July 11th, 2019.

[@hank91918]

excellent explanations, thanks Caleb!

[@dima8832]

Very clear explanation ! Thank you

[@djnihal2]

like everybody said.. job well done bro..

[@amacdougal1]

So well explained. Thanks mate.

[@Zelakus]

This is what i was looking for. Thanks bro 😁

[@angelriera4970]

always a simple and clear explanation. thanks man

[@Connie.346]

very best video i have seen thus far

[@ganeshhegde4049]

That was really well explained!

[@nehajaiswal21]

very simple explanation & to the point

[@Tattysnuc]

Those are really great analogies - ref: Index vs a phone book- thank you for sharing :)

[@raghavkandubai7865]

thank you, great explanation. keep teaching!

[@Ifeoma-v2s]

Thanks a lot sir this was really helpful 😊.And to think I was struggling with something that easy all this while 😅

[@UpYours101]

Great video, helped me understand quite a bit.

[@NehaGupta-lf1sr]

Loved the explanation . Thanks for clearing my doubts

[@burnt3436]

this is actual gold

[@noahpineda3419]

Keep it up! So easy to understand.

[@leoliu8546]

best DB tutorial Ever!!! Thanks a lot

[@Yacoobee]

seriously you explain very well thank you for the video

[@godfathermikal]

Very good analogies. Spot on.

[@data_dave]

this guy is the man

[@hanneslpd5034]

You answered all my questions in the first three sentences :D

[@RandomVideos-ll6jz]

Caleb, I want to buy Database Design book, what book do you recommend?

[@robertgaudreau2520]

Greatly explained, bravo.

[@fernandoarce804]

Sublime explanation, thanks

[@niteshyadav2112]

1.Hi can you explain if i have table employee there is three col,empid,empname,address, if i use without index and with index which is more faster and why? 2.cluster index and non cluster which index performance faster and why ?

[@ashokkumarjami3997]

Good work. Really appreciated.

[@MyHyperbola]

if that's the teacher I'm coming everyday

[@thecodeiackiller]

Only thing that would've made this video better is a phone book

[@saintmark3979]

Thanks for your video buddy, I learn so much from that

[@TheDigitalShrapnel]

Nice video bro. Other explanations from Oracle and other forums are too academic or technical. You seem to know more than my database design lecturer lol :)

[@catsarereallycool]

Excellent video. Thank you!

[@sangeetasahu4134]

Very nice explanation. You are really great..

[@komlanagbote7100]

Well I love this… Thank you sooo much

[@pauldechampignon2287]

Very well explained. Thanks

[@shingyau2]

Interesting teaching, keep on!

[@vaishnaviv3049]

You got a new subscriber!