Tech101
WE
Web DevelopmentIntermediate

SQL & PostgreSQL Mastery

Learn SQL from the ground up and master PostgreSQL for production. Cover queries, joins, indexes, transactions, and advanced features like CTEs and window functions.

4.8(2,800 ratings)
24K+ students enrolled
Last updated: January 2026EnglishSubtitles: English

What You'll Learn

Write confident SQL SELECT, INSERT, UPDATE, DELETE statements

Combine data across tables using all types of JOINs

Use aggregate functions and GROUP BY for analytics

Write advanced queries with CTEs and window functions

Design normalised relational database schemas

Optimise query performance with indexes and EXPLAIN

Curriculum Breakdown

4 Modules • 20 Lessons • 28h Total8+ Downloadable Resources
Primary Keys & Foreign Keys
10:00
INNER, LEFT, RIGHT & FULL JOINs
15:30
Self Joins & Cross Joins
9:45
Subqueries & EXISTS
13:00
Many-to-Many Relationships
11:30

Learning Format

Video Lessons

High-quality recorded lessons you can watch at your own pace.

20 lessons

Hands-on Projects

Real-world projects that reinforce every concept you learn.

2 projects

Certificate

Earn a verifiable certificate upon successful completion.

On completion

Certification Details

🎓

SQL & PostgreSQL Developer Certificate

Issued by Tech101

Validate your database skills with a professional certificate recognised across the industry.

Certificate Requirements

  • Shareable on LinkedIn
  • PDF download
  • Unique verification ID

Completion Certificate

Awarded upon finishing all course content and submitting projects. Shows dedication and completion.

Graded Certificate

Earned by passing the final assessment with 70%+ score. Demonstrates verified skill proficiency.

Your Instructor

DC

David Chen

Senior Full Stack Developer

David is a senior full-stack engineer with 12 years of industry experience building scalable web applications at top tech companies.

4.9
Instructor Rating
8.2K
Reviews
52K+
Students
8
Courses
4.9 Instructor Rating

Requirements & Prerequisites

Technical Requirements

  • Basic programming knowledge helpful but not required
  • PostgreSQL installed locally (or Supabase account for cloud)

Who This Course Is For

  • Backend developers who want to work with databases confidently
  • Data analysts moving to SQL
  • Full Stack track students

Student Reviews

4.8
2,800 ratings
72%
18%
6%
2%
2%

Frequently Asked Questions

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Join 24K+ students who are already building real skills with SQL & PostgreSQL Mastery.

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