Top 25 SQL Interview Questions and Answers(The BEST SQL Interview Questions)

In this video, I will share my Top 25 SQL Interview Questions and Answers which I have captured from my own experience of using SQL for the past 12 years. Learn these SQL Questions and also all the SQL concepts which are covered in these 25 questions to clear any SQL Interview.

In this video, I will go through my pick for the top 25 SQL interview questions and then provide some additional information on what the interviewer is expecting from you when he asks these questions. The answers to each of these 25 SQL questions are present in my blog. I have written a blog in my website techTFQ where I have mentioned these 25 questions along with the answers to these 25 questions.

In this video, I will go through the questions but will not explain all the answers in detail. You can find all the answers in my blog.

Timestamp:
00:00 Intro
02:28 SQL Interview Questions (#1 to #5)
07:05 SQL Interview Questions (#6 to #10)
11:43 SQL Interview Questions (#11 to #15)
16:52 SQL Interview Questions (#16 to #20)
22:14 SQL Interview Questions (#21 to #25)

One of the most challenging part of preparing for an SQL interview is to identify what the SQL concepts we need to learn to clear the interview. Hence in this video, I wanted to share from my experience what were the top SQL questions for clearing Interview. I have come up with these questions after taking several SQL interviews myself and also by giving several SQL interviews over the past 12 years of the work experience.

These questions are just in my opinion the most important SQL questions or SQL concepts that you need to prepare before an SQL interview.
These questions are not in any specific order and the questions are scattered for a beginner or fresher SQL developer to intermediate SQL position to a Senior level SQL position.

I hope the video and my blog would benefit you guys to clear SQL interview.
I'd be more than happy to know about your interview success stories. DO share them in the comments below if this video and my blog helped in any way.

🔴 WATCH MORE VIDEOS HERE 👇

✅ SQL Tutorial - Basic concepts:

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✅ SQL Tutorial - Advance concepts:

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✅ Practice Solving Intermediate SQL Queries:

✅ Practice Solving Complex SQL Queries:

✅ Data Analytics Career guidance:

✅ SQL Course, SQL Training Platform Recommendations:

✅ Python Tutorial:

THANK YOU,
Thoufiq

[igloo]

Im in this field and I can tell you that typically the people that ask you these questions don’t know the answers until they looked them up to hit you with them during the interview

[priyankadevi-zljx]

techTFQ - the main difference between delete and truncate statements besides removing the data from the table, truncate resets the id to 0 whereas delete doesn't do that. let's say if a table has 100 records. if you use delete statement and delete all 100 records and try to insert a new record. Your new record will have the id starting from 101 whereas with truncate it will start from 1. I think this isn't on your differences. Basically, truncate removes the memory allocation along with the data whereas delete doesn't.

Thanks!

[DarrellWolfe]

What I have found fascinating about learning SQL is this: After doing a LOT of queries to the database with Microsoft Excel Power Query function, I came to SQL understanding almost all the concepts already and I only needed to learn the syntax. I would say I could answer about half these questions and I'm only three weeks into SQL but a year and a half into Power Query.

This was a really helpful video! I'll check out the blog. 🎉🎉🎉

[enshk]

You're my SQL HERO, Taufiq!! Thank you for everything you do. You've helped my understanding IMMENSELY.
So grateful for you!

[danytr]

"good question you can check the answer in my blog, next question oh you can definitely check the answer in my blog"

[gparvez]

You are right about this questions. My recent interview with one of the MNC in France asked few of this questions.
here are the questions that I was asked.
1. Do you know window functions? Can you name few?
2. Have you ever used CTE table?
3. Diffrence btw where, Having, Group by.

[anjalipandey]

Thank you for coming up with this video. It helped me to get a glance at what to expect in interviews.

[ft_peakhd]

Hi Taufiq,

Small change for question 11,
In mYSQL you could even write it as

Select substring_index(full name, ' ', 1) from table_name this will give you the required o/p.

This query makes it simple to understand and gives the result much faster .

[LAKSHITBHATNAGAR]

Hi Taufiq, Thank you for all the videos on SQL and Python .YT also helped me found this gem channel and now I am preparing for my upcoming interview for an IT senior analyst from your channel .My SQL fundamental has improved in a week .I hope to learn from channel through my Data engineering and Business analytics journey .Thanks again for the awesome content .Appreciate your great work to the people .

[scarefacearinze]

I discovered your channel today. excellent contents. Straight to the point with clear examples

[akshaykumarsingh]

You are doing great job Thowfiq.
And I mean it.
I'll tell all of my students to follow you. I have been following you for a while and I got you and your work.
Very strong, real and tough content you provide. That's awesome.

[girijashamak]

Happy to see the growth of your channel young man. Very much deserved . Appreciate your time and efforts . God bless 🙏

[johnpg]

Great content Thoufiq.. Your videos are really helpful. Waiting for your complete SQL tutorial series.. Functions, Stored Procedures, Triggers, etc. Thanks a lot.

[devendraraghuwanshi]

From Madhya Pradesh, !!May the grace of Mahakal always be upon you!! TFQ Thanking for helping people to get in IT at no cost, really your teaching style and content is priceless, , Thank you for offering Data analyst skills FREE

[SagarKumar-dbxy]

This was definitely Helpful. As a fresher we r often confused on what and how much to study.. Please make few videos on Stored Procedures and Functions as well. Thank you for everything you are doing.

[selectstation]

Great deal brother. I appreciate the knowledge. You the man.

[laurak]

Another great video and so much preparation and work went into this. This is going to help so many people. I’ve watched a lot of videos about SQL interviews but this one is the most detailed and I love the supplementary information on your blog too. As a beginner in SQL, there are definitely concepts here that are brand new to me. Because this video is good for all skill levels, I would find it helpful to have a note on the blog as to which concepts are important for beginners to know vs intermediate vs advanced. You explained it well here but I think it would be good to see it there as well. Thank you again for all of your help, Thoufiq. One thing I can guarantee is that anyone who interviews me will hear about you because I have learned so much from you! 🙏🏻😀

[hopecelebre]

Spot on! You’re videos are very reliable! ❤❤

[sabhrang]

I am very new to SQL. I have been studying for less than two months.Your videos are so easy to follow. Good command on English language. Keep up the good work. I will be watching more often. Thank you.

[rick]

Great video, always a good idea to brush up on whatever SQL instance the company will be using... In some db systems procedures that work far differently than they work for SQL Server, MySQL, Oracle. Others, like Postgress allow embedding an update in a cte... Keeping them all separate is a challenge.