SQL Masterclass: From Absolute Beginner to Developer

SQL Masterclass: From Absolute Beginner to Developer | Udemy
English | Size: 7.89 GB
Genre: eLearning

Master SQL from Scratch: Become a Pro Developer Easiest explanations, Comprehensive coverage, Real-world applications

What you’ll learn
Learns how to install mysql workbench
Learns how to work with mysql commands
Learns how data is stored and modified in SQL
Will provide complete knowledge on all database objects of sql
Data analytics, Data engineering, Data science, Database development

SQL Masterclass: From Absolute Beginner to Advanced Query Expert

This course is a complete, step-by-step journey that transforms anyone—from absolute beginner to confident practitioner—into a production-ready SQL developer using MySQL. Every concept is explained, demonstrated, and immediately practiced inside the MySQL Workbench so you see results in real time.

The curriculum is broken into four progressive phases:

Phase 1 – Foundations

You start with nothing more than curiosity. We install MySQL together, tour the Workbench, and learn what a database truly is. You’ll master every DDL statement (CREATE, ALTER, DROP, TRUNCATE, RENAME) and understand when to use each one. Next we cover every MySQL datatype in depth: TINYINT, SMALLINT, MEDIUMINT, INT and BIGINT; FLOAT, DOUBLE, and DECIMAL for exact money calculations; CHAR vs VARCHAR vs TEXT for strings; DATE, DATETIME, TIMESTAMP, and TIME for temporal data. You practice inserting data three different ways (implicit, explicit, and bulk) and learn safe UPDATE and DELETE patterns that never break referential integrity.

Phase 2 – Data Integrity & Modeling

Real databases must enforce rules. We cover PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, CHECK, DEFAULT, and AUTO_INCREMENT constraints with hands-on labs. You’ll normalize sample datasets then denormalize selectively for performance. A mini-project asks you to refactor an existing schema so it passes all normal-form tests while remaining practical.

Phase 3 – Query Mastery

You now write powerful SELECT statements. We teach the exact SQL execution order so you understand why WHERE filters before HAVING. You aggregate data with GROUP BY, filter groups with HAVING, and sort with ORDER BY. We then turn to relationships: you diagram 1-to-1, 1-to-many, and many-to-many scenarios, then implement them using INNER, LEFT, RIGHT, and FULL OUTER joins. Self-joins (employee-manager) and cross-joins (reporting matrices) are demystified. Sub-queries and derived tables are compared side-by-side so you know when each is optimal. You’ll calculate the N-th highest salary in two different ways without ever hard-coding values.

Phase 4 – Production & Performance

The final phase makes you production-ready. You create parameterized stored procedures, handle errors with SIGNAL/RESIGNAL, and deploy triggers for audit trails. You learn transaction control (COMMIT, ROLLBACK, SAVEPOINT) and user security (GRANT, REVOKE). Indexing receives special attention: clustered vs non-clustered, B-tree vs hash, plus full-text and spatial indexes. We build a banking database project that stores accounts, transactions, and loan records, then optimize it until complex reports run in milliseconds. Finally, you explore window functions—RANK, DENSE_RANK, ROW_NUMBER, LAG, and LEAD—to produce executive-level dashboards without leaving SQL.

Key Differentiators

• Zero-to-hero pacing—no prior experience required

• 100+ hands-on exercises with downloadable starter scripts

• Real-world banking project carried from design to optimization

• Interview-style challenges at the end of each week

• Lifetime access, captions in multiple languages, and responsive Q&A support

By the final lecture you will confidently design schemas, enforce data integrity, write complex analytical queries, optimize performance, and secure a MySQL database—skills immediately transferable to Mysql, PostgreSQL, SQL Server, Oracle, or any other relational system.

Who this course is for:
Beginner who is planning to learn mysql completely
SQL for professional learners and working professionals and developers

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