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Advanced SQL
Kaggle
Kaggle

Advanced SQL

Take SQL skills to the next level — JOINs, analytics functions, and nested data.
free
intermediate

4 hrs

course

About this course

This Kaggle course takes your SQL skills beyond the basics, teaching you the advanced techniques that power real-world data analysis. You'll master JOINs, window functions, and how to work with nested data — the exact tools analysts and engineers use daily. Kaggle, trusted by millions of data professionals globally, delivers this content with the same rigor they bring to their competition platform.

What you'll learn

  • Write complex JOINs (INNER, LEFT, RIGHT, FULL OUTER) to combine data from multiple tables efficiently
  • Use window functions (ROW_NUMBER, RANK, LAG, LEAD) to perform calculations across rows and partitions
  • Query nested and deeply structured data using unnesting and aggregation techniques
  • Optimize SQL queries for performance and write readable, maintainable code
  • Build analytical queries that surface insights from large datasets
  • Work with real datasets to solve practical business problems
  • Apply analytics functions to rank, compare, and trend data over time

Who this is for

If you've written basic SELECT and WHERE queries and want to handle more complex data challenges, this course is your next step. You're ready for this if you understand table basics and want to move into real analysis work.

  • Data analysts — unlock the advanced queries you'll see in job descriptions and use daily to uncover business insights
  • Software engineers — deepen SQL knowledge to optimize backend queries and understand database interactions
  • Business intelligence professionals — master the techniques needed to build dashboards and reports that drive decisions
  • Career switchers — build data skills to pivot into analytics or data science roles

Prerequisites

You should be comfortable with basic SQL: SELECT, WHERE, GROUP BY, and simple aggregations like COUNT and SUM. If you're new to SQL entirely, start with Kaggle's introductory SQL course first.

Why this matters for Indian learners

Data skills open doors in India's fast-growing tech industry. Companies across fintech, e-commerce, and analytics — from Flipkart and Paytm to countless startups — hire data analysts and engineers specifically for SQL expertise. Advanced SQL proficiency can mean the difference between junior and mid-level roles, which directly impacts salary and growth potential.

Whether you're in Bangalore's startup ecosystem, Mumbai's finance sector, or working remotely, SQL remains one of the most portable, in-demand skills. Many Indian companies use analytics to compete globally, and they need people who can write the queries that power those insights.

Frequently asked questions

Is this course really free?

Yes, completely free. Kaggle Learn courses are available to everyone at no cost. You'll have full access to lessons, code notebooks, and exercises without paying.

How long will it take to complete?

The course takes about 4 hours total. That's roughly one focused hour per week over a month, or you can move faster depending on your pace and how much time you spend practicing with the datasets.

Will I get a certificate?

Yes. You'll earn a Kaggle Learn certificate upon completion, which you can share on LinkedIn and include in applications. It's a small but meaningful credential that shows you've mastered these skills.

At a glance

Provider
Kaggle
Level
Intermediate
Duration
4 hrs
Format
Self-paced
Language
En
Certificate
True
Price
free (0 )

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