Welcome to my daily SQL practice repository! I post one new SQL question and its solution every day to sharpen my skills in data querying, analysis, and database management.
- SELECT, WHERE, GROUP BY, HAVING
- Joins (INNER, LEFT, RIGHT, FULL)
- Subqueries
- Window functions
- CTEs
- Aggregations
- Indexing and performance
- Real-world case studies
| Day | Topic | Difficulty | Link |
|---|---|---|---|
| 1 | Basic SELECT | Easy | Day_01 |
| 2 | Joins | Medium | Day_02 |
| ... | ... | ... | ... |
To stay consistent and master SQL for real-world data problems.
Follow along or fork this repo to practice yourself!