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PostgreSQL Exercises, Practice, Solution - w3resource

What is PostgreSQL?

PostgreSQL is a powerful open-source object-relational database system known for its reliability, data integrity, and correctness. With over 15 years of development, it has a strong reputation in the industry.

Practice & Exercises:

The best way to learn PostgreSQL is through practice. This section is for beginners to intermediate users to enhance their SQL skills with exercises. Happy Coding!

List of PostgreSQL Exercises

Table Creation and Management

• PostgreSQL Create Table statement [19 Exercises]
• PostgreSQL Alter Table statement [13 Exercises]

Data Manipulation

• PostgreSQL Insert Into statement [13 Exercises]
• PostgreSQL Update Table statement [8 Exercises]

Data Retrieval

• PostgreSQL Basic SELECT statement [19 Exercises]
• PostgreSQL Restricting and Sorting Data [11 Exercises]
• PostgreSQL Aggregate Functions and Group by [14 Exercises]

Functions and Expressions

• PostgreSQL String Functions [14 Exercises]

Advanced Querying

• PostgreSQL JOINS [13 Exercises]
• PostgreSQL Subqueries [21 Exercises]

Indexes and Performance Optimization

• PostgreSQL Creating and managing indexes [60 Exercises]
• PostgreSQL Understanding and using EXPLAIN and ANALYZE for query optimization [60 Exercises]
• PostgreSQL Index types (e.g., B-tree, Hash, GIN, GiST) [60 Exercises]

Transactions and Concurrency Control

• PostgreSQL BEGIN, COMMIT, ROLLBACK [60 Exercises]
• PostgreSQL Isolation levels (e.g., Read Committed, Repeatable Read, Serializable) [60 Exercises]
• PostgreSQL Locking mechanisms and deadlock prevention [60 Exercises]

Views and Materialized Views

• PostgreSQL Creating and managing views [60 Exercises]
• PostgreSQL Updating views [50 Exercises]
• PostgreSQL Creating and refreshing materialized views [45 Exercises]

Stored Procedures and Functions

• PostgreSQL Creating and managing views [60 Exercises]
• PostgreSQL Using triggers with stored procedures [50 Exercises]
• PostgreSQL Returning result sets from functions [50 Exercises]

Partitioning

• PostgreSQL Table partitioning (e.g., range, list, hash) [50 Exercises]
• PostgreSQL Managing partitioned tables [50 Exercises]
• PostgreSQL Querying partitioned tables [50 Exercises]

Security and User Management

• Creating and managing roles and users. [50 Exercises]
• Granting and revoking privileges. [50 Exercises]
• Row-level security (RLS). [50 Exercises]

Snippets

• PostgreSQL Snippets [173 Exercises]

More to come!

Structure of 'hr' database :

Click here to get Oracle Hr Database

You may Download .tar.gz file and .zip file of the database (both structure and data) to practice on your local machine.



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