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Most In-Demand Skill
Master SQL for Data Professionals
The #1 skill every data analyst, engineer, and scientist needs. Go from zero to advanced SQL in 30 focused sessions.
30 Sessions
Certification
Exemplary Feedbacks
SQL Mastery
30 Focused Sessions
SELECT
name, AVG(salary) AS avg_sal
FROM
employees
GROUP BY
department
ORDER BY
avg_sal DESC;
Used By
98% of Companies
Queries Practiced
200+
Prerequisites
Basic computer skills
No coding experience required
Curiosity about data & databases
What You'll Learn
Write efficient SQL queries to extract & filter data
Use JOINs, subqueries, CTEs & window functions
Design normalized relational database schemas
Optimize slow queries using indexes & execution plans
Aggregate & analyze data for business reporting
Work with real-world databases (MySQL, PostgreSQL)
Learning Roadmap
Database Fundamentals
Session no. 1-4
Core SQL Queries
Session no. 5-10
Aggregations & Grouping
Session no. 11-14
Joins & Relationships
Session no. 15-20
Advanced SQL
Session no. 21-26
Database Design & Optimization
Session no. 27-30
Detailed Syllabus
Module 1: Database Fundamentals
4 sessionsWhat is a database & RDBMS?Tables, rows & columnsData types & constraintsSetting up MySQL & PostgreSQL
Module 2: Core SQL Queries
6 sessionsSELECT, WHERE & ORDER BYDISTINCT, LIMIT & aliasesFiltering with AND, OR, IN, BETWEENPattern matching with LIKE & wildcards
Module 3: Aggregations & Grouping
4 sessionsCOUNT, SUM, AVG, MIN, MAXGROUP BY & HAVINGAggregate with ROLLUPReal-world business reporting queries
Module 4: Joins & Relationships
6 sessionsINNER, LEFT, RIGHT & FULL joinsSelf joins & cross joinsJoining multiple tablesEntity relationships & foreign keys
Module 5: Advanced SQL
6 sessionsSubqueries & correlated subqueriesCTEs (WITH clause)Window functions (ROW_NUMBER, RANK, LAG/LEAD)CASE statements & conditional logic
Module 6: Database Design & Optimization
4 sessionsNormalization (1NF, 2NF, 3NF)Indexes & query optimizationEXPLAIN & execution plansCapstone: Analyst portfolio project
Frequently Asked Questions
Ready to Query Your Way to Success?
SQL is the universal language of data. Start speaking it fluently with CodeParallels.
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