Oracle Interview Question - oracle index related questions - BTREE index in oracle

[@Variable.Constant.]

Dear Siva, There is a lot of content on the internet but this one is surely a masterpiece. Also, you have put so much effort in editing the videos so that the explanation is creating an impact. Kudos!! Would love to see more videos on performance tuning. Subscribed and going to share your channel in my network.

[@SivaAcademy]

Thanks a lot Kapil, 🙏💐💐

[@asifsoft7861]

One of the best video on indexes. Thank you!

[@SivaAcademy]

Welcome

[@Rizwan079]

Excellent explaination, Thanks a lot for making the things simple and easy to understand. 👌

[@SivaAcademy]

Welcome bro 🙏💐💙

[@asifsoft7861]

One of the best video on indexes. Thanks for the vdo.

[@theboharsingh]

well structured and organized way to share knowledge.....really good..

[@SivaAcademy]

Thank you bro

[@poonamchauhan5502]

Best Video on Internet related to INDEX.

[@abdulrehman-io7uz]

Dear Siva, your way of explaining is quite fascinating. You are literally making PLSQL very easy to understand for naive people like me. Thanks, Dear.

[@SivaAcademy]

Welcome Abdul 💐🙏

[@ramireddyt1506]

Please post performance tuning videos

[@dhrubaswain1578]

The explanation is at its best. Ready to spent time and learn from here instead of browsing here and there. Please continue the basic and simplicity of the concepts

[@SivaAcademy]

Welcome :-), Its my pleasure

[@rajshkr786]

As mentioned you have created an index and queried in the condition using those indexed columns with min and max functions, so instead of having full index(min/max) being used in the access path, isn't that a feasible way to create a function-based index using min and max functions on those columns.

[@satya8763]

more than expected...keep it up

[@sadashiv975]

Hi Shiv, Amazing knowledge transfer is happening from your "Shiv Academy". I am gaining knowledge from your end. I have searched a lot to learn PLSQL here and there but finally got the right path. I have already shared your channel in my groups. I just loved it. Thank you so much.

[@SivaAcademy]

Thank you for your comments, and thanks a lot for sharing with your friends, 💐💐🙏

[@user-dn9fo8xl8o]

You are making it easy for us!! Fantastic Job Mr. Siva. I would surely recommend your videos to my friends 👌.

[@SivaAcademy]

My pleasure bro, thank you for your comments 💐💐

[@rampradeepkalivarapu3722]

Really addicted to your vedios.....

[@manojjethar2202]

Hi Siva, Could you please provide information about Cluster index and non cluster index

[@vidyah8787]

Outstanding explanation sir. Thank you very much for your time and effort. 🙏🙏

[@SivaAcademy]

Welcome 💐🙏

[@nandakumar4776]

How the B-Tree index will work on transactional table? Where huge volume of data is getting inserted everyday. Will it re-generate / refresh the B-Tree every time when the table in updated(for each transaction)?

[@aabha21aug]

Too good. Keep up the good work!!

[@SivaAcademy]

@aabha, Thanks 🙏 for your comment :-)

[@bhojrajsingh8737]

Hi Shiva, In Index fast full scan you have created index on emo no and sal column but you have not used any one of the column in where condition. Will index hit in this scenerio??

[@suryatanyarout3551]

Your videos are so good n informative that I forgot to like and comment

[@SivaAcademy]

My pleasure, thank you 💐

[@sankarN-wd5nd]

If we created composite index on three columns and we are we using in where clause only two columns or one column from that index. Will it still do the index scan ?

[@venkkatmerla4389]

Hi Siva, Thank you for the vedio your explanation is super good, I don’t know how I missed your vedios from last 5 years , very informative content. If there some possibility try to do some tunning vedios in depth

[@SivaAcademy]

Welcome bro, sure please stay tuned, will cover in upcoming videos

[@venkkatmerla4389]

Hi Siva, I am watching your vedios from a couple of weeks ago, I just want to know about the domain index purpose and it is usage , when I am creating a domain index it is taking lot of time , I have gone through some blogs but I did not get the clear , can you please help on this domain index . Thanks

[@sandeepal1]

Amazing content and well explained. I learnt alot. Thanks a ton🙏🙏👍👍

[@SivaAcademy]

Its my pleasure 💐💐

[@arunrocketz]

Great explanation and i just got immersed in ur video and with ur knowledge..Learning a lot by watching ur videos daily..one request sir can you please upload the day to day activities of a sql/plsql developer ..

[@SivaAcademy]

Thank you, sure please stay tuned

[@1986pramod]

Can there be multiple indexes created with same name. If not, then, is there a oracle that oracle would show composite index as Normal. I can see 2 columns in USER_IND_COLUMNS. But, USER_INDEXES > Index Type is Normal. Can you provide some guidance on such scenario.

[@shitaljadhav5294]

Very nice more than expected.

[@SivaAcademy]

Welcome 💐🙏💐

[@siddhartharao8490]

Sir, what does "alter table emp modify eno not null" return?

[@kbalanandam]

Can you share video on Hash, Nested Loop and Sort Merge join along with in depth of knowledge in terms of the way they works ? Thank you.

[@AliBaba-mx8of]

Good explanation sir 👏

[@SivaAcademy]

Thank you

[@chinmayakumarpadhee9235]

Hi Siva. Loved your explanation. One doubt what is the best practice to create index ? Before insertion of data or after insertion of data in the table?

[@achyutdeokatepatil897]

What a gerat explaination and knowledge. thanks dada..

[@SivaAcademy]

@Achyut, 🙏🙏🙏 for your comments bro

[@garigasravyasree1631]

Sir.I have seen that we have 2 types of index like clustered and non clustered. But here there are other index types. Can you tell what exactly need to answer for types of indexes.

[@vilasmuley9590]

Fantastic explanation. But i have a doubt. When we create a btree index on ''ename'' column suppose, then how sorting will take place?

[@SivaAcademy]

sorting based on Alpha char, similar to numerical sorting, string sorting will take place

[@abhinav121rocks]

Sir... If function based index is used bcz otherwise we cant use functions in an SQL statement and yet have the index get used... Then howcome we were able to use sum and max functions on a non function based index....

[@akshayphadnis]

Can we create a unique index on a non- unique column? If yes, how will indexing work?

[@sudarshanraj3783]

Can you explain about global index vs local index

[@vivektarab16]

00:56 - Start with B - Tree 02:34 - What is a B - Tree Index 07:13 - Where to Find Metadata Information 9:09 - How to find Whether the Index is used by the Query 11:52 - When to Create B Tree Index 13:40 - Range Scan 15:14 - Unique Scan 19:52 - Index Fast Full Scan 22:04 - Advantages and Disadvantages of B - Tree Index

[@kamaleshr6419]

Hello Sir, what are the privileges we need to have to access v$sql?. Please let me know

[@vilasgaikwad4141]

Very nice explanations...thanks siva

[@SivaAcademy]

@Vilas, Thanks for your comments :-)

[@champakalibhattacharjee9679]

Siva please teach us to debug a very big query that are mainly found in real life examples..300 lines or 3000 lines code...procedure function etc...

[@SivaAcademy]

Sure, will add to upcoming list of questions, please stay tuned bro

[@anthamsuprithareddy1997]

Good explanation I liked it

[@SivaAcademy]

My pleasure

[@FactsHeaven]

Great expectation

[@SivaAcademy]

Thank you bro

[@firebird9095]

Diffrence between selectivity and cardinality?

[@16aksi]

Excellent Explanation!!!

[@SivaAcademy]

@achyut, Thanks for your comment :-)

[@RamGuptaoracle]

Very nice Explanation Siva

[@SivaAcademy]

Thank you 🙏

[@deepti7397]

Superb explanation

[@SivaAcademy]

Thank you 🙂

[@rajabaskar1105]

Best explanation ever seen😘😍😍 Pls put vedios regards performance tuneing

[@SivaAcademy]

Sure 😊, Thanks for your comments

[@vedashwi]

well explained,thank u so much..

[@SivaAcademy]

Welcome bro 💐

[@veggourmet1467]

thanks bro for clear explanations.....

[@SivaAcademy]

Welcome bro 💐

[@elenabit1095]

Thank you so much sir for explaining so nicely....

[@SivaAcademy]

Welcome 🙏

[@knowledgebox9691]

Like always you nailed it bro🔥

[@SivaAcademy]

thank you bro

[@knowledgebox9691]

@@SivaAcademy Would be great if you post video on how to read explain plan.

[@SivaAcademy]

Sure bro

[@muralik479]

pls give session Oracle HINTS and which one has to be used based in scenario

[@SivaAcademy]

Sure bro please stay tuned

[@raghuveerlakkampelli9591]

Please Explain how to take AWR Report

[@SivaAcademy]

Yeah, please stay tuned

[@raghuveerlakkampelli9591]

Yeah we loved it

[@palashtarumandal5431]

please create one video on plsql collections (nested table, associative array) in details

[@SivaAcademy]

Hi Palash, Thanks for your comment, Here is the video series for collection kzbin.info/aero/PLb1qVSx1k1VpAFTXopXvAh_D3PLcTntdm more collection Videos will be coming soon in this series, please stay tuned.

[@palashtarumandal5431]

@@SivaAcademy Hi Siva thanks for your reply. Your vedios are really good. I saw ur collection vedios ,they are at basic level.could you please carate one vedio with when to use varry ,when to use nested table and frequently asked questions in interview.it will be very helpful.

[@SivaAcademy]

Hi Palash, Sure I will create one video covering the difference and when to use what time of collection. Once the basic set of collection videos are uploaded, i will upload the differences and interview questions specific to collection, so its easy for every one to follow. However, i will try to cover the most important collection related interview questions as soon as possible. Thanks for your comments, Stay tuned for more videos.

[@dasubabuch1596]

Siva, u forgot to explain the full table scan. Can u pls check it.

[@SivaAcademy]

Will add to upcoming video please stay tuned

[@ManojKumar-il8vt]

Nice explanation sir

[@SivaAcademy]

Thanks Manoj

[@akashsoni6419]

Could you please clarify more IOT

[@SivaAcademy]

Sure, please stay tuned.

[@TysonGill]

This is Gold

[@dhavalpandya4162]

Hi Sir, Plz explain index on null values also

[@SivaAcademy]

Sure, please stay tuned 👍, I will add it to upcoming video list

[@jay.shah96]

So primary key index is a b-tree type index?

[@SivaAcademy]

Yes

[@brizesalvator8086]

explained perfectly...

[@SivaAcademy]

Thanks bro!! :-)

[@neerajmishra14]

Amazing, thanks

[@SivaAcademy]

@Neeraj, Thanks for your comment :-)

[@shiveshpandey1952]

Hi sir this the most important video for the interview whether the fresher or experience guy .Sir if you have separate video for the performance tuning please share. Thanks Sir..

[@SivaAcademy]

@Shivesh, I just started performance tuning video series...will be posting all the performance tuning videos in that series, please stay tuned for more videos.

[@Dineshk0416]

@@SivaAcademy Can you please share link for performance tuning. i Couldn't find it.

[@jiyelaljaiswal7458]

explanation Plan show index when I execute : select count(*) from table_name where ? explanation Plan DOES NOT show index when I execute : select * from table_name where ?

[@abbeydudeuk]

now I know how to do scams.