Master SQL & MySQL Learning Guide: Master Table of Contents

Welcome to the Master SQL & MySQL Learning Guide. This comprehensive curriculum synthesizes fundamental database theory, practical SQL programming, enterprise database design, modern query techniques, and performance optimization into an original, unified learning path.

All practice queries, demonstrations, and exercises throughout this guide operate against the unified sql_mastery database schema, modeling a real-world enterprise spanning e-commerce, workforce management, supply chains, and finance.

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Complete Curriculum Structure

c:\antigravity\master_sql_guide\
├── sql_mastery_schema.sql             # Unified Schema DDL & Seed Data
├── 00_master_table_of_contents.md     # Curriculum Roadmap & Master Index
├── 01_sql_fundamentals.md             # Level 1: RDBMS Architecture & SQL Core
├── 02_database_and_table_management.md # Level 2 & 3: DDL (Databases, Tables, ALTER)
├── 03_data_types.md                   # Level 4: MySQL Data Types & Storage
├── 04_constraints.md                  # Level 5: Relational Integrity Constraints
├── 05_crud_operations.md              # Level 6: CRUD (INSERT, UPDATE, DELETE)
├── 06_select_and_filtering.md         # Level 7: Retrieval, WHERE, NULLs, Ranges
├── 07_sorting_and_limiting.md         # Level 7: ORDER BY, LIMIT, OFFSET Pagination
├── 08_sql_operators.md                # Level 8: Arithmetic, Logical, Set, Pattern
├── 09_sql_functions.md                # Level 9-12: Aggregate, String, Date, Math, Flow
├── 10_group_by_and_having.md          # Level 13-14: Grouping, HAVING, ROLLUP
├── 11_joins.md                        # Level 15: INNER, LEFT, RIGHT, FULL, Self, Cross
├── 12_union.md                        # Level 16: Set Operations (UNION & UNION ALL)
├── 13_subqueries.md                   # Level 17: Scalar, Correlated, EXISTS, CTEs
├── 14_keys_and_relationships.md       # Level 18-19: Primary/Foreign Keys & Cardinality
├── 15_database_design.md              # Level 20: ER Modeling & Schema Architecture
├── 16_normalization.md                # Level 21: 1NF, 2NF, 3NF, BCNF & De-normalization
├── 17_views.md                        # Level 22: Virtual Tables & Security Views
├── 18_indexes.md                      # Level 23: B-Tree Indexes, Composite, Performance
├── 19_transactions.md                 # Level 24-25: ACID, Locks, Isolation Levels
├── 20_stored_procedures.md            # Level 26: Procedures, Parameters, Control Flow
├── 21_functions.md                    # Level 27: Deterministic User-Defined Functions
├── 22_triggers.md                     # Level 28: Event Triggers & Audit Logging
├── 23_advanced_sql.md                 # Level 29: Window Functions & JSON Manipulation
├── 24_query_optimization.md           # Level 30: EXPLAIN, Profiling & SARGability
├── 25_security_and_best_practices.md  # Level 31: RBAC, Grants, SQL Injection Defense
├── 26_real_world_projects.md          # Level 32: 5 Production-Grade Database Systems
├── 27_exercises.md                    # Practice System: Categorized by Level
├── 28_answer_key.md                   # Complete Solutions & Verifications
├── 29_interview_questions.md          # Level 33: 150 Curated Interview Questions
├── 30_sql_cheat_sheet.md              # Level 35: Compact Command & Syntax Reference
├── 31_learning_roadmaps.md            # 7-Day, 14-Day, 30-Day, 60-Day Schedules
├── 32_final_revision_guide.md         # Level 34: High-Yield Exam & Interview Revision
└── 33_az_sql_reference.md             # Alphabetical Keyword & Function Lexicon

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35 Mastery Levels Overview

Level	Topic Area	Focus Modules	Key Core Concepts
01	Database Fundamentals	01_sql_fundamentals.md	Data vs Information, DBMS vs RDBMS, SQL vs NoSQL, Client-Server architecture
02	SQL Fundamentals	01_sql_fundamentals.md	DDL, DML, DQL, DCL, TCL command taxonomy, execution lifecycle
03	Database & Table Creation	02_database_and_table_management.md	CREATE DATABASE, CREATE TABLE, DROP, RENAME, TRUNCATE
04	Data Types	03_data_types.md	Numeric, String, Date/Time, JSON, binary storage costs, type casting
05	Integrity Constraints	04_constraints.md	PRIMARY KEY, NOT NULL, UNIQUE, CHECK, DEFAULT, AUTO_INCREMENT
06	Data Manipulation (CRUD)	05_crud_operations.md	INSERT, UPDATE, DELETE, Bulk insertion, ON DUPLICATE KEY UPDATE
07	Filtering & Sorting	06_select_and_filtering.md, 07_sorting_and_limiting.md	WHERE, ORDER BY multi-column, LIMIT, OFFSET, pagination traps
08	SQL Operators	08_sql_operators.md	Comparison, Logical (AND, OR, NOT), BETWEEN, IN, LIKE, IS NULL
09	String Functions	09_sql_functions.md	CONCAT, SUBSTRING, LENGTH, LOWER, UPPER, TRIM, REPLACE
10	Date & Time Functions	09_sql_functions.md	NOW, CURDATE, DATEDIFF, DATE_ADD, DATE_FORMAT, TIMESTAMPDIFF
11	Numeric Functions	09_sql_functions.md	ROUND, FLOOR, CEIL, MOD, POWER, SQRT, ABS, TRUNCATE
12	Aggregate Functions	09_sql_functions.md	COUNT(*), COUNT(col), SUM, AVG, MIN, MAX, NULL handling
13	GROUP BY	10_group_by_and_having.md	Multi-column grouping, ONLY_FULL_GROUP_BY SQL mode, WITH ROLLUP
14	HAVING	10_group_by_and_having.md	Row filtering (WHERE) vs Aggregate filtering (HAVING)
15	Relational JOINs	11_joins.md	INNER, LEFT, RIGHT, FULL OUTER emulation, CROSS, Self JOIN
16	Set Operations	12_union.md	UNION, UNION ALL, schema compatibility rules, ordering set results
17	Subqueries & CTEs	13_subqueries.md	Scalar, Column, Table subqueries, Correlated subqueries, EXISTS, CTEs
18	Primary & Foreign Keys	14_keys_and_relationships.md	Surrogate vs Natural keys, Composite keys, Referential actions (CASCADE)
19	Relational Modeling	14_keys_and_relationships.md	One-to-One, One-to-Many, Many-to-Many, Junction/Bridge entities
20	Database Design	15_database_design.md	Entity Relationship Diagrams (ERDs), cardinality, conceptual to physical
21	Normalization	16_normalization.md	Update anomalies, 1NF, 2NF, 3NF, BCNF, OLTP vs OLAP de-normalization
22	Views	17_views.md	Virtual tables, Abstraction, Security views, Updatable view rules
23	Indexes & Performance	18_indexes.md	Clustered vs Secondary indexes, B-Tree mechanics, Composite leftmost prefix
24	Transactions & ACID	19_transactions.md	Atomicity, Consistency, Isolation, Durability, Transaction state machine
25	Concurrency Control	19_transactions.md	COMMIT, ROLLBACK, SAVEPOINT, Isolation levels, Dirty/Phantom reads
26	Stored Procedures	20_stored_procedures.md	DELIMITER, IN, OUT, INOUT parameters, Control flow (IF, WHILE)
27	Stored Functions	21_functions.md	CREATE FUNCTION ... RETURNS, Deterministic rules vs Procedures
28	Triggers	22_triggers.md	BEFORE/AFTER INSERT/UPDATE/DELETE, OLD/NEW row images, Audit trails
29	Advanced SQL	23_advanced_sql.md	Window functions (ROW_NUMBER, RANK, LEAD, LAG), JSON operators
30	Query Optimization	24_query_optimization.md	EXPLAIN, Execution plans, SARGable clauses, Covering index optimization
31	Security & Administration	25_security_and_best_practices.md	CREATE USER, GRANT, REVOKE, Roles, Prepared statements, SQL Injection
32	Real-World Projects	26_real_world_projects.md	5 End-to-end schemas, business logic, analytics, and data management
33	Interview Mastery	29_interview_questions.md	150 Technical interview questions (Beginner, Intermediate, Advanced)
34	Rapid Revision Guide	32_final_revision_guide.md	High-yield summary cards, syntax memory tables, common failure traps
35	MySQL Cheat Sheet	30_sql_cheat_sheet.md	Production cheat sheet of commands, functions, syntax patterns

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Consistent Database Schema Reference: sql_mastery

To practice alongside this guide, execute the script [sql_mastery_schema.sql](file:///c:/antigravity/master_sql_guide/sql_mastery_schema.sql).

Entity Relationship Diagram (ERD)

erDiagram
    DEPARTMENTS ||--o{ EMPLOYEES : employs
    EMPLOYEES ||--o{ EMPLOYEES : manages
    CUSTOMERS ||--o{ ORDERS : places
    CATEGORIES ||--o{ PRODUCTS : classifies
    SUPPLIERS ||--o{ PRODUCTS : supplies
    ORDERS ||--o{ ORDER_ITEMS : contains
    PRODUCTS ||--o{ ORDER_ITEMS : ordered_in
    ORDERS ||--o{ PAYMENTS : paid_via

    DEPARTMENTS {
        int department_id PK
        varchar department_name
        varchar location
    }
    EMPLOYEES {
        int employee_id PK
        varchar first_name
        varchar last_name
        varchar email
        decimal salary
        date hire_date
        int department_id FK
        int manager_id FK
    }
    CUSTOMERS {
        int customer_id PK
        varchar first_name
        varchar last_name
        varchar email
        varchar city
        varchar country
        int loyalty_points
    }
    CATEGORIES {
        int category_id PK
        varchar category_name
    }
    SUPPLIERS {
        int supplier_id PK
        varchar supplier_name
        varchar country
    }
    PRODUCTS {
        int product_id PK
        varchar product_name
        int category_id FK
        int supplier_id FK
        decimal unit_price
        int stock_quantity
    }
    ORDERS {
        int order_id PK
        int customer_id FK
        date order_date
        varchar status
        decimal total_amount
    }
    ORDER_ITEMS {
        int item_id PK
        int order_id FK
        int product_id FK
        int quantity
        decimal unit_price
        decimal discount
    }
    PAYMENTS {
        int payment_id PK
        int order_id FK
        date payment_date
        decimal amount
        varchar payment_method
        varchar payment_status
    }

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Navigating the Modules

Every technical chapter follows a standardized 12-section blueprint:

1. What is it?
2. Why do we use it?
3. Syntax
4. Basic Example
5. Real-World Example (using sql_mastery)
6. Step-by-Step Explanation
7. Expected Result
8. Common Mistakes
9. Best Practices
10. Practice Questions (Easy $\rightarrow$ Medium $\rightarrow$ Difficult)
11. Interview Questions
12. Quick Revision

Proceed to [01 — SQL Fundamentals](file:///c:/antigravity/master_sql_guide/01_sql_fundamentals.md) to begin the curriculum.