Quantum Sphere

1. Hook
Struggling with slow queries and unclear performance issues? Even well-written SQL can behave unexpectedly when data grows. Without understanding execution plans and indexing strategy, optimization becomes guesswork. Many professionals reach this stage and feel unsure how to improve efficiency.

2. Solution 
This course will teach you how PostgreSQL processes queries internally. You will learn how to analyze execution plans and apply indexing strategies thoughtfully. The focus is on performance clarity rather than trial and error. You’ll gain confidence in diagnosing and improving query efficiency.

3. What's Inside
Module 1: Query Analysis – reading EXPLAIN and execution plans
Module 2: Indexing Strategy – B-tree and other index types
Module 3: Performance Optimization – restructuring slow queries
Module 4: Data Scaling Concepts – handling growing datasets

4. Who is this for?
Perfect if you want to improve query performance
Work with medium to large datasets
Want deeper PostgreSQL insight
Not for you if JOIN logic is still confusing

5. What You'll Learn
Interpret execution plans
Choose appropriate index strategies
Optimize complex SQL queries
Improve performance for large datasets

6. Support
support via email