Varun kumar - Postgresql tutor - Bengaluru

1^st lesson free

Varun kumar

Rate R123
Response 1h

R123/h

1^st lesson free

PostgreSQL

Beginner-Friendly SQL Classes: Learn Queries, Joins and Window Functions Step by Step with Real-Life

PostgreSQL

Lesson location

- online

About Varun kumar

Hi, I'm Varun Harsh, a data analytics professional based in Bengaluru. I hold a B.Tech in Computer Science and Engineering from Chandigarh University, and I work with SQL, Power BI (DAX and Power Query), Python (Pandas and NumPy) and Advanced Excel.
I started my career in sales and business development, with roles at Learning Lab Research Institute, Vyapar Apps and 99acres.com, before moving into data analytics. Because of that, I understand both sides: how businesses use data to make decisions, and how a beginner feels when starting SQL from zero. I teach with real business problems, such as finding top customers, tracking monthly growth and removing duplicate records, so that concepts make sense and stay with you.
My teaching approach
Simple explanations first, then examples on sample tables
Real-life problems and interview-style questions in every topic
Honest feedback on your queries, with practice tasks to follow up
A pace that fits you, whether you're a complete beginner or preparing for an interview next week

About the lesson

Want to learn PostgreSQL and use it confidently at work or in interviews? These classes are practical, beginner-friendly and focused on real problem solving, not just theory.
What you will learn
Database basics: tables, keys, data types and constraints
Writing queries with SELECT, WHERE, ORDER BY, LIMIT and OFFSET
Aggregations with GROUP BY and HAVING
All types of JOINs, subqueries and CTEs
Window functions such as ROW_NUMBER, RANK, LAG and running totals
CASE, NULL handling, date and string functions
INSERT, UPDATE, DELETE, transactions, indexes and query optimization
How the classes work
Every topic is explained in simple language, followed by examples on sample tables
Real-life business problems, such as top customers, monthly growth and duplicate records
Interview-style questions with feedback on your answers
Practice tasks after each session, plus [mock interviews on request]
Who it is for
Beginners starting SQL from zero
Students and freshers preparing for data analyst interviews
Working professionals moving into data analytics

Rates

Rate

R123

Package rates

5h: R615
10h: R1230

free lesson

The free first lesson with Varun kumar allows you to get to know the tutor and discuss your needs and expectations.

online

R123/h

Beginner-Friendly SQL Classes: Learn Queries, Joins and Window Functions Step by Step with Real-Life

Lesson location

About Varun kumar

About the lesson

Rates

Rate

Package rates

free lesson

online

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Beginner-Friendly SQL Classes: Learn Queries, Joins and Window Functions Step by Step with Real-Life

Lesson location

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Rates

Rate

Package rates

free lesson

online

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