SQL Course – Commit-by-File Learning Path

Welcome to the SQL-Course repository!
This SQL learning resource is designed to be followed by examining each commit in the order it was made. Every commit adds a new concept, and you can refer to the associated .sql file for hands-on code and explanations.

Below you’ll find an example of the first 10 commits in the exact order they were made, with direct links to both the commit and the file(s) you should study for that topic.

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##First 10 Commits with Relevant Files

Order	Commit Message & Link	File(s) to Refer (Example)	Description/Topic
1	understanding ifNULL function in sql statement	ifNULL function.sql	Handling NULLs with ifNULL
2	understanding AS keyword in sql statement	as_keyword.sql	Using the AS keyword for aliases
3	understanding insert into statements	insert_into_statements.sql	The INSERT INTO statement
4	understanding auto_increment keyword	auto_increment.sql	The AUTO_INCREMENT feature
5	understanding default integrity constraint	default_integrity_constraint.sql	Using DEFAULT integrity constraints
6	understanding check integrity constrain	check_integrity_constraint.sql	Using CHECK constraints
7	understanding foreign key integrity constraint	foreign_key_integrity_constrain.sql	FOREIGN KEY constraints
8	understanding primary key integrity constraint	primary_key_integrity_constraint.sql	The PRIMARY KEY constraint
9	understanding unique integrity constraint	unique_integrity_constrain.sql	The UNIQUE constraint
10	understanding not null integrity constraint	not_null_integrity_constraint.sql	The NOT NULL constraint

Note: This is only a sample of the first 10 commits.
For the full and up-to-date commit history, visit: Commits on GitHub

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How to Learn from This Repo

1. Follow the commits in order. Start with the oldest commit to build your knowledge step-by-step.
2. Open the linked file for each commit to see the code, comments, and explanations for the topic.
3. Run and modify the SQL code in your local SQL environment or any SQL playground.
4. Repeat for every commit to cover all core SQL concepts, great for interviews, real-world usage, and mastering SQL.

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Why Use This Approach?

• Each concept is introduced clearly and progressively.
• You always know what file to refer to for hands-on practice.
• Keywords like SQL constraints, SQL NULL, SQL INSERT, SQL AUTO_INCREMENT, and more are covered in depth for both SEO and practical learning.
• Ideal for beginners, interview prep, or anyone looking to deepen their SQL expertise.

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Happy Learning!
⭐ Star this repository and follow along commit-by-commit for the best results.