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Let's be honest, I dove into SQL thinking it was this mythical beast that only coding wizards could tame. But guess what? It turned out to be a superpower anyone can unlock – and believe me, This SQL Roadmap is FREAKING VALUABLE!
Now, the big question: how long does it take to learn?
The truth is, it depends on your background and goals. Here's a roadmap to get you started:
• SQL Basics (1-2 weeks): Grasp the core concepts like creating tables, querying data, and using filters. This is your foundation!
• Intermediate SQL (2-4 weeks): Dive deeper into joins, functions, and data manipulation. Here's where the magic starts to happen!
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• Advanced SQL (Varies): Master window functions, stored procedures, and complex queries. This is where you become a data rockstar!
Remember, this is just a general guide. The key is to practice consistently. Here is the road map that I used for learn SQL.
Basic (2-3 Weeks):
• Fundamentals:
o Introduction to Databases and SQL
o Data Types (e.g., integer, string, date)
o Understanding Relational Databases (tables, columns, rows)
o The Data Manipulation Language (DML):
SELECT statements (retrieving data)
WHERE clause (filtering data)
ORDER BY clause (sorting data)
LIMIT clause (specifying results)
• Working with Data:
o INSERT statements (adding data)
o UPDATE statements (modifying data)
o DELETE statements (removing data)
Intermediate (2-4 Weeks):
• Building Queries:
o JOINs (connecting tables):
INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN
o Subqueries (queries within queries)
o Filtering with advanced WHERE clauses (operators, functions)
o GROUP BY clause (aggregating data)
o Aggregate Functions (COUNT, SUM, AVG, MIN, MAX)
o HAVING clause (filtering grouped data)
• Data Management:
o Creating and altering tables
o Data types and constraints
o Working with Views (virtual tables)
Advanced :
Performance Optimization:
Indexing strategies
Query optimization techniques
Understanding execution plans
Advanced Features:
Window functions (advanced aggregations)
Stored procedures and functions
User-Defined Functions (UDFs)
Triggers (automated actions)
Database Administration:
Security and access control
Backups and recovery
Database administration tools
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