Top 5 Advanced SQL Interview Questions and Answers | Frequently Asked SQL interview questions

In this video we will discuss most frequently asked top 5 Advanced SQL interview questions for experienced. We will also cover different variations of each questions. If you have any interview I am sure 2-3 questions will be from this list.
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[@ankitbansal6]

Here is the detailed explanation of question number 5. Please do like the video to help me reach to more people. Thanks in advance 🙏🙏 Most asked SQL interview question: kzbin.info/www/bejne/roObaJaqhMyjd6c

[@SinghSahab-gg1ow]

request to u pls pls provide same data for practice

[@nikhilsharma-jj6vd]

Hi Sir, I recently got a sql question in HackerRank Interview for Techincal support engineer. Can you give us a solution. If yes, how can I send you the question please revert sir

[@ankitbansal6]

@@nikhilsharma-jj6vd send it on [e-mail]

[@nikhilsharma-jj6vd]

@@ankitbansal6 sure sir. Sir I've also sent you request on LinkedIn. Please accept

[@nikhilsharma-jj6vd]

@@ankitbansal6 sent sir please check

[@addhyasumitra90]

create table emp( emp_id int, emp_name varchar(20), department_id int, salary int, manager_id int, emp_age int); insert into emp values (1, 'Ankit', 100,10000, 4, 39); insert into emp values (2, 'Mohit', 100, 15000, 5, 48); insert into emp values (3, 'Vikas', 100, 10000,4,37); insert into emp values (4, 'Rohit', 100, 5000, 2, 16); insert into emp values (5, 'Mudit', 200, 12000, 6,55); insert into emp values (6, 'Agam', 200, 12000,2, 14); insert into emp values (7, 'Sanjay', 200, 9000, 2,13); insert into emp values (8, 'Ashish', 200,5000,2,12); insert into emp values (1, 'Saurabh',900,12000,2,51);

[@nibhagupta4595]

Thankyou 😊

[@llciii]

I love the fact that you explained keywords that’ll give you an idea of how of to solve the problem 👏🏾👏🏾👏🏾. I’ve just subbed to your channel and liked the video

[@prateekkumar-xc6uo]

Hello Ankit , excellent explanation of sql concepts thanks for sharing with all . could you pls share the dataset for this?

[@rakesh_bangla]

You are a great teacher, Ankit Sir! Thank you for the valuable knowledge.

[@heyrobined]

Make More videos These are really good coverage of what kind of questions asked by companies

[@JeetendraKasi]

Excellent explanation using data and common mistakes that someone can do while querying the data.

[@MubarakAli-qs9qq]

No bakwass , only crisp and clear sql coding❤

[@rajasekhardondati5595]

Excellent explanation Ankit. Thank you. Can you please provide emp,order table datasets .so, that we can practice the same.

[@MubarakAli-qs9qq]

Sir i watched many vedios but could not understand CTE but this one made me understand hats off sir

[@dfkgjdflkg]

As usual, I love your content. Original, helpful and puzzling how you find the solutions. Original content

[@ankitbansal6]

Glad you enjoy it!

[@mantisbrains]

really useful, Thanks Ankit !

[@temik6500]

Hi Ankit, Thank you for what you're doing. Very interesting scenarios. How can one get access to the table's data pls? I was able to create the employee table for practice but the order table was not visible enough as it's more volumunous. This will be helpful for practice purpose. Many thanks

[@NEHAKHANZODE-p8p]

Thank you so much for this video! Your explanation was so clear and easy to understand. I’ve been struggling with this concept for a while, and your content really made it click for me. Keep up the amazing work!

[@ankitbansal6]

You are so welcome!

[@sriharsha398]

Thank you sir for such valuable content with a clean explanation sir

[@guiltycrown6024]

thanks for addressing such important questions ..

[@akashjha7277]

Excellent explanation sir, slow and clear

[@himanshushorts7143]

I am a fresher and I solved all these questions.

[@NEHAKHANZODE-p8p]

Hi Ankit, I have tried multiple times for -YOY growth for product with current month sales more than previous moth sales Could you just correct me if my query is wrong? here is my query for the same: with cte as ( select product_id,month(order_date) as month_order,year(order_date) as year_order, sum(sales) as sales from Orders group by product_id,month(order_date),year(order_date) ), cte2 as (select *, lag(sales,1) over( partition by product_id order by month_order,year_order) as previous_month_sales from cte ) select * from cte2 where sales>previous_month_sales ;

[@sandeepanand3834]

you deserve more subscriber :)

[@shakthimaan007]

wrong. more subscribers deserves him :)

[@vinayakacn401]

nice video, very informative and precise, thanks keep up the work

[@prabhac2273]

Excellent and clear explanation. Thanks for uploading.

[@ankitbansal6]

You are welcome!

[@vishalchakraborty2050]

Thanks Ankit 🙏 You make sql so easy to understand 🤌🤌

[@ankitbansal6]

Keep watching

[@SunilKumar_67]

Great efforts in educating us. Thank you Ankit

[@ankitbansal6]

It's my pleasure🙏

[@aman_mashetty5185]

Great video as usual awesome....!👏👏

[@niharranjandhar3457]

Inner 8 Left 8 Right 9

[@shakthimaan007]

27:00 Ankit, for avoiding duplicate counting, RANGE is used correct?

[@bhuwneshchaudhary6149]

Bro, top 2 will run before the order by clause because in sql order of execution select statement runs before the order by statement

[@ankitbansal6]

Select -> order by -> top 2

[@yashwanthgaming137]

Que: In a month vendor is null then replace with previous month vendors. Input: Year | Vendor | Amt 1-2021 | A | 100 1-2021 | B | 200 1-2021 | C | 300 2-2021 | Null | Null 3-2021 | A1 | 210 3-2021 | B1 | 230 4-2021 | Null | Null output: Year | Vendor | Amt 1-2021 | A | 100 1-2021 | B | 200 1-2021 | C | 300 2-2021 | A | 100 2-2021 | B | 200 2-2021 | C | 300 3-2021 | A1 | 210 3-2021 | B1 | 230 4-2021 | A1 | 210 4-2021 | B1 | 230 How to solve this question Ankit Sir

[@AmanRaj-p8w]

with cte as ( select * , lag(grp) over (order by date) as prev_grp from (select date, group_concat(vendor) as grp from sales group by date) as x ) , cte2 as (select date, grp from cte union all select date, prev_grp as grp from cte ) ,cte3 as ( select * from cte2 where grp is not null ) SELECT date, SUBSTRING_INDEX(SUBSTRING_INDEX(grp, ',', n), ',', -1) AS grp FROM cte3 CROSS JOIN (SELECT 1 AS n UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4) AS numbers WHERE n

[@sz6618]

Create table #Year ( Year1 nvarchar(100),Vendor varchar(10),Amt int) insert into #Year values ('1-2021','A',100) ,('1-2021','B',200) ,('1-2021','C',300) ,('2-2021',Null,Null) ,('3-2021','A1',10) ,('3-2021','B1',230) ,('4-2021',Null,Null) Insert into #Year select * from #year where vendor is not null ;with cte as ( Select *, row_number () over (partition by Year1,vendor order by year1,amt) as rn, left(Year1,1) as yearid from #Year ), cte2 as( select *, case when rn=2 and yearid =1 then (select min(year1) from #year where vendor is null) when rn=2 and yearid =3 then (select max(year1) from #year where vendor is null) else Year1 end as Yer from cte ) select Yer,vendor,amt from cte2 where vendor is not null order by yer,vendor

[@sandeepanand3834]

dataset please, to practise

[@sravankumar1767]

Superb explanation Ankit👌 👏 👍

[@ankitbansal6]

Thank you 🙂

[@raghibelahi937]

Thank you so much sir. Could you please share the dataset.

[@yashpratap9045]

Hello Ankit, love your content and the way you explain things it makes easy for anyone to understand these concepts. Regarding the top 5 products per category question, if we apply the row number with other conditions in a single CTE and then filter it based rn to fetch top 5 products ( please see the query below ). I just wanted to understand by combining everything in a single CTE, are there any edge cases that will not work with this approach? Looking forward to hearing from you! WITH CTE AS (SELECT Category, Product_ID, Sum(Sales) as sales, row_number() over(partition by Category order by sum(Sales) DESC) as rn FROM Orders GROUP BY Category, Product_ID) SELECT * FROM CTE WHERE rn

[@ankitbansal6]

This is also fine

[@yashpratap9045]

@@ankitbansal6 thank you!!

[@zuhebkhan6973]

Hi Ankit Bhai I love your work and I have learnt lot from ur videos as from non IT background I have learnt lot from ur end and started giving interviews for IT sector Today I had interview and they had asked one question on sql Like we have a table with row as string Table1 A B C now they need output as Abc Bac Cab Bac like wise plse help me making this video it will great help to me and other like me

[@ankitbansal6]

What's the logic here .?

[@zuhebkhan6973]

Even I'm clue less they ask me to get column as crossponding each letter

[@sz6618]

here is your solution :Drop table if exists #table1 Create table #Table1 ( id varchar(10)) insert into #Table1 values ('A'),('B'),('C') /* now they need output as Abc Bac Cab */ ;with cte as ( Select *, row_number () over (order by id) as rn from #Table1 ), cte2 as ( Select *, lead(id,1) over (order by rn) as nextvalue, lead(id,2) over (order by rn) as nextvalue2, lag(id,1) over (order by rn) as nextvalue4, lag(id,2) over (order by rn) as nextvalue3 from cte ), cte3 as ( select id,rn, isnull(nextvalue,nextvalue3) as v1, isnull(nextvalue2,nextvalue4) as v2 from cte2 ) Select id, id+lower(v1)+lower(v2) from cte3

[@shwetamishra1497]

Very informative video. Please provide us data for practice.

[@kaustavraytalukdar5466]

Helpful video, dataset please.

[@gauravsati1041]

Its very informative video, can you please share the dataset also?

[@Udayakumar_K]

Really like your content. Please create for python also

[@Nivethan303]

This is very useful 👌

[@Mju98]

Hi ankit. Please attach the datasets which u used for each video

[@minakshityagi7785]

How to find roling quater sales? Ankit Sir can you reply with sql query?

[@krsnabnsl]

Hi @Ankit, can you please provide data link, so we can test on your own.

[@aadarshchaudhari3957]

Great explanation 👏

[@rk-ej9ep]

This is awesome..I subscribed to ur paid course also..

[@ankitbansal6]

Great. Thankyou 😊

[@shikharsaxena8984]

Very helpful video Ankit 👏👏🙂

[@ankitbansal6]

Glad to hear that

[@sravyasrinivas]

Hi ankit. Could you please share the DDL script for these questions.

[@chiranjitdey3788]

Hi Ankit, Can you help solve this question. This question was asked to me in one of the interviews for data analyst position. Write an SQL query to find out the employees whose salary got increased at least 115% compared to the previous maximum salary. The result output should contain the following columns such as employee_name, salary, and salary_growth_percentage.

[@nairitjoshi5933]

you can use a lag function to get previous salary and then compare the latest salary with the previous one and if the percentage difference >115 then that will be your output, current_salary - lag(salary,1,0) over (partition by employee order by salary asc)

[@udhaybhaskarbellamkonda1678]

Good Content,Keep it up 😊

[@varunl6948]

This was helpful!

[@sravankumar1767]

Can you please take one scenario and explain using where & And condition output results for each joins

[@ankitbansal6]

Check this out kzbin.info/www/bejne/j6Hal6RrqbOqY5Y

[@AbhishekKumar-gf4db]

Thanks #ankit sir, for this important video. Please 🙏 create a separate video for how to deal with HR,when she asks why you want to leave your job now,you have only 1 year experience.

[@Chetan_15]

Q1. i want to show top 3 salllary employee but i used * before Top 3 how we get to know the position

[@anikeetdey3411]

plz share the insert query , so that we can practice along with you

[@indiebadger5225]

Hello Ankit, which screen recording application do you use? And if I am on a call with some, will the recording take their sound as well. Thanks

[@ankitbansal6]

I use chrome extension for screen recording

[@Robert-uw8dn]

Hey Ankit, could you please share the data to practice

[@usharanikallubhavi7466]

at around 16:50 time of the video, NULL has been replaced by sales. So, we have got the same value in row1 for both sales and previuos_year_sales columns. But, logically speaking there’s no year previous to 2018, so the previous_year_sales should have been 0, isn’t it. Please clarify. Thanks.

[@ankitbansal6]

If we consider it has 0 then growth will be very high. The same means no growth as the company just started .

[@usharanikallubhavi7466]

@@ankitbansal6 Appreciate the quick response.

[@zuhebkhan6973]

Thanks in advance

[@madhustips8304]

really awesome content

[@ankitbansal6]

Thank you 😊

[@Leo-qo5hk]

Hello Ankit could you please share the script for this queries

[@UshaNirmal-we6ct]

Hi ankit can you make sql 100 practical questions to lifetime access instead of 1 year Please do that I am about to buy that course

[@vamsivamsi2029]

Thanks ankit

[@yuvrajyuvas4730]

Bro, Please help me to get Employee dataset

[@sonalpriya6402]

Please share dataset for practice

[@maqbul313]

Please provide employee and orders table scripts for download. Thank you

[@pranaykukadkar7092]

@ankitbansal6 Please provide the sample data for order table for practise purpose. Thank you

[@anchal7876]

where i can find syntax?

[@vishalsonawane.8905]

@ankitbansal6 Sir content is incomplete until u can not provide your dataset link in description in video :)

[@jaychavan119]

Please provide the Database

[@anand.maheshwari]

Kindly tell us where would I found the data you used.

[@abhinav8160]

sir plse share this data set

[@nevergiveup3475]

First comment❤

[@Nishanthviswajith]

We can use self join instead of lead and lag functions

[@macx8360]

sir dataset plz

[@krishnatripathi5461]

Share the dataset please