Sumit Mittal
Hey!
I'm Sumit Mittal - Founder & CEO of TrendyTech.
I transform the careers of Big data aspirants through my carefully curated masters program to help them evolve into Big data experts. I have put in my wholehearted effort to present to you the best online big data course through the experience gained by having worked on multiple challenging Big data projects as an EX-CISCO and VMware employee.
The journey began in 2018 with my passion for teaching. Started by training a few working professionals, and eventually quit my high-paying job to pursue my passion and to bring about a change in the professional lives of many.
I have incorporated effective learning approaches to master Big Data that have been assimilated over the years as an alumni of top educational organizations like NIT Trichy, BITS Pilani, and IIIT Bangalore.
Link to my website: trendytech.in
Sumit Mittal
Just released a 2 hours complete course on SQL Subqueries
- Single Row
- Multi Row
- Correlated
- Nested
All types of subqueries are Explained
This is a very important topic from the interview perspective.
I am sure you will truly enjoy this learning!
18 hours ago | [YT] | 57
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Sumit Mittal
Today at 7 PM, I will release a special video (2 hours) kind of like a full course on a topic.
This is one of the most important topic in SQL.
Any guesses on what topic?
Lets see who gets it correct.
20 hours ago (edited) | [YT] | 31
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Sumit Mittal
I started building my Gen AI program without thinking too much about the kind of impact it could create.
Honestly, I had no big expectations.
Just a simple intention to teach the way I understand things.
But the last 6 months changed my perspective completely.
Working professionals from every level started learning from me.
People applying the concepts in their projects.
Individuals writing to me that their confidence at work has completely changed.
Even someone with 20 years of experience told me that the way the topics are explained made things finally click.
These moments make me pause and think.
This is exactly why I do what I do.
My goal is simple.
To give the best possible content in Data Engineering and Gen AI.
Clear, practical and truly helpful.
And I will continue building it with the same intent every single day.
4 days ago | [YT] | 59
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Sumit Mittal
Level 1 of the Free SQL Course is now complete.
Twenty days of fundamentals, constraints, functions, aggregations, execution order, set operations and a lot of real examples.
Anyone who has followed the first 20 days with consistency already has a very strong base.
Today we started Level 2.
This is where SQL becomes interesting and far more practical.
The first topic is Inner Joins, and in my experience it is one of the most important concepts in SQL.
If you understand joins well, your confidence in solving real data problems goes up immediately.
Level 2 will focus on joins, subqueries, CTEs and window functions.
These are the topics that decide how well you perform in product based company interviews.
If you have been learning with me so far, keep going.
The next 15 days will strengthen your SQL thinking in the best possible way.
How is your learning going on?
4 days ago | [YT] | 60
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Sumit Mittal
Important Update: So we are done with Level 1 of the Free SQL Program.
20 Days have been released.
The Level 2 will start from Monday.
Right now we are working on to add the quizzes for all the 20 Days.
Also some editing for Level 2 videos going on.
Hope you are having a great learning experience.
1 week ago | [YT] | 92
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Sumit Mittal
One of the most important topic for SQL Interviews is Group By & Having Clause.
Today I will be releasing a full 100 minutes video for the same.
Once you see that, you can crack the hardest of Interviews & your confidence will be just next level.
This is one of the most important video in the entire SQL Superstar program.
This end to end video will be released at 7 PM today.
I hope you all are enjoying your learning.
1 week ago | [YT] | 112
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Sumit Mittal
Why Most RAG Projects Fail Before They Even Start
I once reviewed a project where a team used a powerful LLM but got poorly aligned answers.
The issue was not the LLM.
It was the pipeline.
They had taken a Few thousand pages document, split it into random chunks, and stored it in a vector DB.
No metadata.
No cleaning.
No structure.
No consistency.
The LLM was doing its job.
The pipeline was not.
A production RAG system requires decisions at every layer.
What chunk size should you choose
Should you use fixed-size or semantic chunking
What metadata improves filtering
Which embedding model suits your domain
How many chunks should be retrieved
Which vector DB fits your scale
What context-window does your model support
How do you evaluate responses objectively
When all these decisions come together, the system feels magical.
When even one layer breaks, the entire solution becomes unreliable.
People think Gen AI is about the LLM.
It is not.
It is about designing the complete flow around the LLM.
That is what makes a Data Engineer truly valuable today.
If you want to learn Gen AI in a way like never before, then DM me to know about my Gen AI program starting tomorrow.
#genai
2 weeks ago | [YT] | 41
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Sumit Mittal
Hello Friends welcome again :)
Hope you all are enjoying the SQL Course.
14 Days have been released.
Also the portal would be helping you all.
The Day 15 will be released tomorrow (Saturday).
In the meantime you can revise the sessions and attempt the quizes.
Happy Learning!
2 weeks ago | [YT] | 57
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Sumit Mittal
The enrolments for my Free 50-Days SQL Superstar Program will close soon.
Over 3000 candidates have enrolled for it.
If you’ve been planning to start, this is the best time.
All video sessions, notes, datasets, quizzes, and certificates are already organised on the learning portal.
Once the window closes, new registrations won’t be accepted.
Enrol here: lnkd.in/giyJuJeG
These 50 Days can change your life!
#sql #database #dataengineering
2 weeks ago | [YT] | 49
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Sumit Mittal
who all are successfully able to use the portal?
I hope it will enhance the learning experience.
2 weeks ago | [YT] | 34
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