Learn SQL for Data Science — Complete Beginner Guide 2026
Why SQL for Data Science?
SQL is used in 90% of data analyst interviews. It's the language of databases and is essential for any data professional.
Learning Path
Week 1: SQL Basics
SELECT, WHERE, ORDER BY
Week 2: Joins
INNER, LEFT, RIGHT, FULL joins
Week 3: Aggregations
GROUP BY, HAVING, subqueries
Week 4: Advanced
Window functions, CTEs
Week 5-6: Practice
200+ practice problems
Learn SQL with DSWallah
DSWallah's SQL course covers all these topics with 200+ practice problems and interview preparation.
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