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PostgreSQL Advanced Queries and Optimization

Become a PostgreSQL Expert—Optimize Queries, Boost Performance, Command Top Salaries!

4.6
Advance

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PostgreSQL Advanced Queries and Optimization
3 Modules
March 2026
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Course Curriculum

3 Modules · 11 Chapters · 11 Topics · 108 Sub-topics

01
Foundation
3 Chapters · 3 Topics · 29 Sub-topics
Introduction to PostgreSQL
1 Topics
Introduction to PostgreSQL
6 Sub-topics
What is PostgreSQL and Why Use It
Installing PostgreSQL on Different Platforms
Understanding PostgreSQL Architecture
Connecting to PostgreSQL Database
PostgreSQL Command-Line Tools (psql)
Understanding Databases, Schemas, and Tables
Basic Data Querying
1 Topics
Basic Data Querying
13 Sub-topics
SELECT Statement Structure
Selecting Specific Columns
Using Column Aliases
WHERE Clause Basics
Comparison Operators
Logical Operators - AND, OR, NOT
IN and NOT IN Operators
BETWEEN Operator
LIKE and ILIKE Pattern Matching
IS NULL and IS NOT NULL
DISTINCT Keyword
ORDER BY Clause - ASC and DESC
LIMIT and OFFSET for Pagination
Working with Multiple Tables - Joins
1 Topics
Working with Multiple Tables - Joins
10 Sub-topics
Understanding Table Relationships
INNER JOIN Basics
LEFT JOIN (LEFT OUTER JOIN)
RIGHT JOIN (RIGHT OUTER JOIN)
FULL OUTER JOIN
CROSS JOIN
Self Joins
Joining Multiple Tables
Using Table Aliases in Joins
Join Performance Considerations
02
Advanced Queries
4 Chapters · 4 Topics · 39 Sub-topics
Subqueries
1 Topics
Subqueries
8 Sub-topics
What are Subqueries
Subqueries in WHERE Clause
Subqueries in SELECT Clause
Subqueries in FROM Clause
Correlated Subqueries
EXISTS and NOT EXISTS
ANY and ALL Operators
Subquery Performance Considerations
Common Table Expressions (CTEs)
1 Topics
Common Table Expressions (CTEs)
9 Sub-topics
Introduction to CTEs
Basic CTE Syntax
Multiple CTEs in One Query
Recursive CTEs - Part 1 (Basics)
Recursive CTEs - Part 2 (Hierarchical Data)
Recursive CTEs - Part 3 (Advanced Patterns)
CTEs vs Subqueries
Performance Considerations
Materialized CTEs
Window Functions
1 Topics
Window Functions
12 Sub-topics
Introduction to Window Functions
ROW_NUMBER Function
RANK and DENSE_RANK Functions
NTILE Function
LAG and LEAD Functions
FIRST_VALUE and LAST_VALUE
PARTITION BY Clause
ORDER BY in Window Functions
Window Frame Clauses - ROWS
Window Frame Clauses - RANGE
Aggregate Window Functions
Combining Multiple Window Functions
Advanced Query Techniques
1 Topics
Advanced Query Techniques
10 Sub-topics
Pivot Tables with CROSSTAB
Dynamic SQL Generation
Lateral Joins
Using DISTINCT ON
Advanced Pattern Matching
Working with Time Series Data
Gap and Island Problems
Running Calculations
Top-N Queries per Group
Query Parameterization
03
Optimization Techniques
4 Chapters · 4 Topics · 40 Sub-topics
Indexes
1 Topics
Indexes
10 Sub-topics
Understanding Index Basics
Creating B-Tree Indexes
Unique Indexes
Multi-Column Indexes
Partial Indexes
Expression Indexes
EXPLAIN and Query Plans
ANALYZE Command
When to Create Indexes
Index Maintenance Considerations
Query Optimization Techniques
1 Topics
Query Optimization Techniques
10 Sub-topics
Understanding Query Execution Plans
Using EXPLAIN ANALYZE
Index Usage Analysis
Query Rewriting for Performance
Avoiding SELECT *
Optimizing Joins
Optimizing Subqueries
Partitioning Strategies
Statistics and ANALYZE
Connection Pooling Concepts
Performance Monitoring and Tuning
1 Topics
Performance Monitoring and Tuning
10 Sub-topics
Monitoring Active Queries
pg_stat_statements Extension
Identifying Slow Queries
Lock Monitoring
Connection Monitoring
Cache Hit Ratios
Vacuum and Autovacuum Basics
Index Bloat Detection
Query Performance Metrics
Application-Level Monitoring
Best Practices and Design Patterns
1 Topics
Best Practices and Design Patterns
10 Sub-topics
Code Organization Strategies
Naming Conventions
Comment and Documentation
Version Control for Database Schema
Migration Strategies
Testing Database Code
Avoiding N+1 Query Problems
Batch Processing Techniques
Monitoring and Alerting
Code Review Guidelines

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