It's good but it's not the best on RUclips. There are plenty of videos that all can be the BEST. You just understand this video because you lacked knowledge or understanding of words used in other videos.
This is far and away the best indexing video I have watched. Every other one barely goes into how indexing works under the hood, or use analogies that don't really make sense. Keep up the awesome content!
It’s not that accurate though. He used binary search instead of a B tree (though he did briefly mention it) but I think that misguides the viewer into thinking that’s also what is happening. It also fails to explain the importance of avoiding reading from disk (the whole point of using B trees over AVL or red black trees for example).
More on the performance hit of indices on WRITES. How does it work? Does it: A. Insert the new row in the TABLE (O(1)). Find where the index should be placed (O(logn)), insert it there (O(1)). Or does it: B. Insert the new row in the TABLE (O(1)). Query the whole TABLE again (constant). Sort it again (O(idk)). Save it in the index (O(1)). --- I'm guessing A, but I'm not even sure if that's possible lol. I guess the "finding where the index should be placed" would be the slow part and most likely it would be equivalent as doing the same SELECT query for that column as well? Since you mentioned that SELECT is O(logn): Essentially writes would be O(logn). Would that be, correct?
there are a lot of sh** RUclipsrs who upload trash in the name of content, but you are opposite to those. Thank-you for this precise and easy on mind tutorial!
I have a program which is doing a lot of queries against a table. The problem is that the program is too slow, and it's updating many records. How can I speed it up? Can i index columns used in searches that is not getting updated? Or does indexing get slow eitherway if i update records in a table with indexed columns?
BEST Indexing explanation video on RUclips
It's good but it's not the best on RUclips. There are plenty of videos that all can be the BEST. You just understand this video because you lacked knowledge or understanding of words used in other videos.
recap:
7:08 full table scan
12:26 binary search
13:56 we shouldn't add index at everything
This is far and away the best indexing video I have watched. Every other one barely goes into how indexing works under the hood, or use analogies that don't really make sense. Keep up the awesome content!
It’s not that accurate though. He used binary search instead of a B tree (though he did briefly mention it) but I think that misguides the viewer into thinking that’s also what is happening. It also fails to explain the importance of avoiding reading from disk (the whole point of using B trees over AVL or red black trees for example).
Finalyy a tut that really explains what indexes are... The only one till now. Than you!
Study it tooo long ago, recently my boss put me on the spot with ‘what is an index in db’ haha. Now I know, thanks mate. Good video
Now i understand this system design term... Please make more videos on cool stuffs like this.
This video explained indexing so simply that I can't forget it ever!!!
i have looked up to many videos and just came across this detailed best explanation
great tutorial bro, keep it up, good luck to your channel !!
Great explaination, can you do B-tree and Hash in DB Indexing?
Hands down the best tutorial on index❤
whoa! fantastic lesson! More content please!
More on the performance hit of indices on WRITES. How does it work?
Does it:
A. Insert the new row in the TABLE (O(1)). Find where the index should be placed (O(logn)), insert it there (O(1)).
Or does it:
B. Insert the new row in the TABLE (O(1)). Query the whole TABLE again (constant). Sort it again (O(idk)). Save it in the index (O(1)).
---
I'm guessing A, but I'm not even sure if that's possible lol. I guess the "finding where the index should be placed" would be the slow part and most likely it would be equivalent as doing the same SELECT query for that column as well? Since you mentioned that SELECT is O(logn):
Essentially writes would be O(logn). Would that be, correct?
there are a lot of sh** RUclipsrs who upload trash in the name of content, but you are opposite to those. Thank-you for this precise and easy on mind tutorial!
Now i understand this system design term... Please make more videos on cool stuffs like this. also Tsm
Very good tutorial. Thank you.
Super informational! Thank you.
Very well explained. Thanks for that
can you do something like this for mongoDB?
Wow you made this easy. Great video
This was so helpful. Thank you!
Laith, Please do a course on Database
Please. Please. PLEASE
Hands down best video
I have a program which is doing a lot of queries against a table. The problem is that the program is too slow, and it's updating many records. How can I speed it up? Can i index columns used in searches that is not getting updated? Or does indexing get slow eitherway if i update records in a table with indexed columns?
This was a solid explanation
Quality lecture. Thanks...
what annotation app are you using
Is this somehow how it works in Windows when it indexes files for file search?
Awesome, thank you.
Fantastic. Thank you very much.
100% dope explanation of indexing
best video so far
Increase to 1.5x speed for smoother flow
Best video on Indexing
great tutorial!
Excellent🥳
Amazing!!!😍
Thank you !
my kind of content
You explained the unexplainable, that calls for the glock glock 3000
thank you so much
thank you very much :)
i was watching happily till i read the title
Awesome
♥
But you don’t have to call me dumb though this is already enough 😞
I don't usually subscribe, but ...
If i understand by this video, am i dumb ?
Apparently... I also think it s a stupid title, and to call your viewers dumb... Why?
developers could have explained this in 5 mins in very much better way
DUMP? Well,....
As a dumb developer I must say I didnt understand.
the title of the video is pretty much embarrassing to click on.
Question to me : Am I Dumb ? No
So dont click on the video.
I hate that you couldn't cut a wait from the animation...